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Finding the Fourth Proportional to 78,044.91, 107,701.97 and 42,234.92

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Solution

The fourth proportional to 78,044.91, 107,701.97 and 42,234.92 is: 58,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,044.91 : 107,701.97 = 42,234.92 : x
  2. Step 2: Convert to fraction form
    78,044.91/107,701.97 = 42,234.92/x
  3. Step 3: Cross multiply
    78,044.91x = 107,701.97 × 42,234.92
  4. Step 4: Simplify right side
    78,044.91x = 4,548,784,086.79
  5. Step 5: Solve for x
    x = 4,548,784,086.79/78,044.91
  6. Step 6: Final answer
    x = 58,284.19

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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.