Home / 72,318.08-99,713.92-57,966.40

Finding the Fourth Proportional to 72,318.08, 99,713.92 and 57,966.40

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Solution

The fourth proportional to 72,318.08, 99,713.92 and 57,966.40 is: 79,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,318.08 : 99,713.92 = 57,966.40 : x
  2. Step 2: Convert to fraction form
    72,318.08/99,713.92 = 57,966.40/x
  3. Step 3: Cross multiply
    72,318.08x = 99,713.92 × 57,966.40
  4. Step 4: Simplify right side
    72,318.08x = 5,780,056,972.29
  5. Step 5: Solve for x
    x = 5,780,056,972.29/72,318.08
  6. Step 6: Final answer
    x = 79,925.48

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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.