Home / 77,813.80-107,378.64-45,985.66

Finding the Fourth Proportional to 77,813.80, 107,378.64 and 45,985.66

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Solution

The fourth proportional to 77,813.80, 107,378.64 and 45,985.66 is: 63,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,813.80 : 107,378.64 = 45,985.66 : x
  2. Step 2: Convert to fraction form
    77,813.80/107,378.64 = 45,985.66/x
  3. Step 3: Cross multiply
    77,813.80x = 107,378.64 × 45,985.66
  4. Step 4: Simplify right side
    77,813.80x = 4,937,877,630.30
  5. Step 5: Solve for x
    x = 4,937,877,630.30/77,813.80
  6. Step 6: Final answer
    x = 63,457.61

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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.