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Finding the Fourth Proportional to 67,681.70, 101,502.84 and 20,294.90

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Solution

The fourth proportional to 67,681.70, 101,502.84 and 20,294.90 is: 30,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,681.70 : 101,502.84 = 20,294.90 : x
  2. Step 2: Convert to fraction form
    67,681.70/101,502.84 = 20,294.90/x
  3. Step 3: Cross multiply
    67,681.70x = 101,502.84 × 20,294.90
  4. Step 4: Simplify right side
    67,681.70x = 2,059,989,987.52
  5. Step 5: Solve for x
    x = 2,059,989,987.52/67,681.70
  6. Step 6: Final answer
    x = 30,436.44

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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.