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Finding the Fourth Proportional to 71,211.60, 98,241.12 and 42,901.02

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Solution

The fourth proportional to 71,211.60, 98,241.12 and 42,901.02 is: 59,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,211.60 : 98,241.12 = 42,901.02 : x
  2. Step 2: Convert to fraction form
    71,211.60/98,241.12 = 42,901.02/x
  3. Step 3: Cross multiply
    71,211.60x = 98,241.12 × 42,901.02
  4. Step 4: Simplify right side
    71,211.60x = 4,214,644,253.94
  5. Step 5: Solve for x
    x = 4,214,644,253.94/71,211.60
  6. Step 6: Final answer
    x = 59,184.80

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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.