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Finding the Fourth Proportional to 74,702.70, 111,856.30 and 61,613.50

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Solution

The fourth proportional to 74,702.70, 111,856.30 and 61,613.50 is: 92,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.70 : 111,856.30 = 61,613.50 : x
  2. Step 2: Convert to fraction form
    74,702.70/111,856.30 = 61,613.50/x
  3. Step 3: Cross multiply
    74,702.70x = 111,856.30 × 61,613.50
  4. Step 4: Simplify right side
    74,702.70x = 6,891,858,140.05
  5. Step 5: Solve for x
    x = 6,891,858,140.05/74,702.70
  6. Step 6: Final answer
    x = 92,257.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.