Home / 79,127.86-109,199.40-45,141.88

Finding the Fourth Proportional to 79,127.86, 109,199.40 and 45,141.88

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Solution

The fourth proportional to 79,127.86, 109,199.40 and 45,141.88 is: 62,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,127.86 : 109,199.40 = 45,141.88 : x
  2. Step 2: Convert to fraction form
    79,127.86/109,199.40 = 45,141.88/x
  3. Step 3: Cross multiply
    79,127.86x = 109,199.40 × 45,141.88
  4. Step 4: Simplify right side
    79,127.86x = 4,929,466,210.87
  5. Step 5: Solve for x
    x = 4,929,466,210.87/79,127.86
  6. Step 6: Final answer
    x = 62,297.48

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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.