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Finding the Fourth Proportional to 71,188.52, 98,235.34 and 39,353.12

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Solution

The fourth proportional to 71,188.52, 98,235.34 and 39,353.12 is: 54,304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.52 : 98,235.34 = 39,353.12 : x
  2. Step 2: Convert to fraction form
    71,188.52/98,235.34 = 39,353.12/x
  3. Step 3: Cross multiply
    71,188.52x = 98,235.34 × 39,353.12
  4. Step 4: Simplify right side
    71,188.52x = 3,865,867,123.26
  5. Step 5: Solve for x
    x = 3,865,867,123.26/71,188.52
  6. Step 6: Final answer
    x = 54,304.64

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1.5x scale

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.