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Finding the Fourth Proportional to 74,695.10, 112,042.65 and 74,257.70

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Solution

The fourth proportional to 74,695.10, 112,042.65 and 74,257.70 is: 111,386.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,695.10 : 112,042.65 = 74,257.70 : x
  2. Step 2: Convert to fraction form
    74,695.10/112,042.65 = 74,257.70/x
  3. Step 3: Cross multiply
    74,695.10x = 112,042.65 × 74,257.70
  4. Step 4: Simplify right side
    74,695.10x = 8,320,029,490.91
  5. Step 5: Solve for x
    x = 8,320,029,490.91/74,695.10
  6. Step 6: Final answer
    x = 111,386.55

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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.