Home / 72,087.28-107,657.68-61,443.92

Finding the Fourth Proportional to 72,087.28, 107,657.68 and 61,443.92

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Solution

The fourth proportional to 72,087.28, 107,657.68 and 61,443.92 is: 91,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,087.28 : 107,657.68 = 61,443.92 : x
  2. Step 2: Convert to fraction form
    72,087.28/107,657.68 = 61,443.92/x
  3. Step 3: Cross multiply
    72,087.28x = 107,657.68 × 61,443.92
  4. Step 4: Simplify right side
    72,087.28x = 6,614,909,877.31
  5. Step 5: Solve for x
    x = 6,614,909,877.31/72,087.28
  6. Step 6: Final answer
    x = 91,762.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.