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Finding the Fourth Proportional to 73,280.97, 109,909.04 and 20,678.13

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Solution

The fourth proportional to 73,280.97, 109,909.04 and 20,678.13 is: 31,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,280.97 : 109,909.04 = 20,678.13 : x
  2. Step 2: Convert to fraction form
    73,280.97/109,909.04 = 20,678.13/x
  3. Step 3: Cross multiply
    73,280.97x = 109,909.04 × 20,678.13
  4. Step 4: Simplify right side
    73,280.97x = 2,272,713,313.90
  5. Step 5: Solve for x
    x = 2,272,713,313.90/73,280.97
  6. Step 6: Final answer
    x = 31,013.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.