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Finding the Fourth Proportional to 67,670.74, 101,520.13 and 20,283.92

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Solution

The fourth proportional to 67,670.74, 101,520.13 and 20,283.92 is: 30,430.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,670.74 : 101,520.13 = 20,283.92 : x
  2. Step 2: Convert to fraction form
    67,670.74/101,520.13 = 20,283.92/x
  3. Step 3: Cross multiply
    67,670.74x = 101,520.13 × 20,283.92
  4. Step 4: Simplify right side
    67,670.74x = 2,059,226,195.31
  5. Step 5: Solve for x
    x = 2,059,226,195.31/67,670.74
  6. Step 6: Final answer
    x = 30,430.08

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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.