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Finding the Fourth Proportional to 71,230.85, 98,748.08 and 67,438.83

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Solution

The fourth proportional to 71,230.85, 98,748.08 and 67,438.83 is: 93,491.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,230.85 : 98,748.08 = 67,438.83 : x
  2. Step 2: Convert to fraction form
    71,230.85/98,748.08 = 67,438.83/x
  3. Step 3: Cross multiply
    71,230.85x = 98,748.08 × 67,438.83
  4. Step 4: Simplify right side
    71,230.85x = 6,659,455,645.30
  5. Step 5: Solve for x
    x = 6,659,455,645.30/71,230.85
  6. Step 6: Final answer
    x = 93,491.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.