Home / 78,857,798,297.58-108,823,857,309.57-42,728,802,777.86

Finding the Fourth Proportional to 78,857,798,297.58, 108,823,857,309.57 and 42,728,802,777.86

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Solution

The fourth proportional to 78,857,798,297.58, 108,823,857,309.57 and 42,728,802,777.86 is: 58,965,799,665.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,857,798,297.58 : 108,823,857,309.57 = 42,728,802,777.86 : x
  2. Step 2: Convert to fraction form
    78,857,798,297.58/108,823,857,309.57 = 42,728,802,777.86/x
  3. Step 3: Cross multiply
    78,857,798,297.58x = 108,823,857,309.57 × 42,728,802,777.86
  4. Step 4: Simplify right side
    78,857,798,297.58x = 4,649,913,136,506,051,493,888
  5. Step 5: Solve for x
    x = 4,649,913,136,506,051,493,888/78,857,798,297.58
  6. Step 6: Final answer
    x = 58,965,799,665.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.