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Finding the Fourth Proportional to 73,711.27, 110,566.90 and 21,120.75

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Solution

The fourth proportional to 73,711.27, 110,566.90 and 21,120.75 is: 31,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,711.27 : 110,566.90 = 21,120.75 : x
  2. Step 2: Convert to fraction form
    73,711.27/110,566.90 = 21,120.75/x
  3. Step 3: Cross multiply
    73,711.27x = 110,566.90 × 21,120.75
  4. Step 4: Simplify right side
    73,711.27x = 2,335,255,820.17
  5. Step 5: Solve for x
    x = 2,335,255,820.17/73,711.27
  6. Step 6: Final answer
    x = 31,681.13

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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.