Home / 87,349.28-120,507-55,073.28

Finding the Fourth Proportional to 87,349.28, 120,507 and 55,073.28

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Solution

The fourth proportional to 87,349.28, 120,507 and 55,073.28 is: 75,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,349.28 : 120,507 = 55,073.28 : x
  2. Step 2: Convert to fraction form
    87,349.28/120,507 = 55,073.28/x
  3. Step 3: Cross multiply
    87,349.28x = 120,507 × 55,073.28
  4. Step 4: Simplify right side
    87,349.28x = 6,636,715,752.96
  5. Step 5: Solve for x
    x = 6,636,715,752.96/87,349.28
  6. Step 6: Final answer
    x = 75,979.06

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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.