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Finding the Fourth Proportional to 71,002.71, 97,984.07 and 39,171.60

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Solution

The fourth proportional to 71,002.71, 97,984.07 and 39,171.60 is: 54,056.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,002.71 : 97,984.07 = 39,171.60 : x
  2. Step 2: Convert to fraction form
    71,002.71/97,984.07 = 39,171.60/x
  3. Step 3: Cross multiply
    71,002.71x = 97,984.07 × 39,171.60
  4. Step 4: Simplify right side
    71,002.71x = 3,838,192,110.63
  5. Step 5: Solve for x
    x = 3,838,192,110.63/71,002.71
  6. Step 6: Final answer
    x = 54,056.98

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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.