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Finding the Fourth Proportional to 71,702.44, 107,405.70 and 42,030.16

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Solution

The fourth proportional to 71,702.44, 107,405.70 and 42,030.16 is: 62,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.44 : 107,405.70 = 42,030.16 : x
  2. Step 2: Convert to fraction form
    71,702.44/107,405.70 = 42,030.16/x
  3. Step 3: Cross multiply
    71,702.44x = 107,405.70 × 42,030.16
  4. Step 4: Simplify right side
    71,702.44x = 4,514,278,755.91
  5. Step 5: Solve for x
    x = 4,514,278,755.91/71,702.44
  6. Step 6: Final answer
    x = 62,958.51

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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.