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Finding the Fourth Proportional to 74,774.91, 103,200.57 and 47,947.71

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Solution

The fourth proportional to 74,774.91, 103,200.57 and 47,947.71 is: 66,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,774.91 : 103,200.57 = 47,947.71 : x
  2. Step 2: Convert to fraction form
    74,774.91/103,200.57 = 47,947.71/x
  3. Step 3: Cross multiply
    74,774.91x = 103,200.57 × 47,947.71
  4. Step 4: Simplify right side
    74,774.91x = 4,948,231,002.19
  5. Step 5: Solve for x
    x = 4,948,231,002.19/74,774.91
  6. Step 6: Final answer
    x = 66,175.02

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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.