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Finding the Fourth Proportional to 67,646.40, 101,560.80 and 39,595.20

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Solution

The fourth proportional to 67,646.40, 101,560.80 and 39,595.20 is: 59,446.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,646.40 : 101,560.80 = 39,595.20 : x
  2. Step 2: Convert to fraction form
    67,646.40/101,560.80 = 39,595.20/x
  3. Step 3: Cross multiply
    67,646.40x = 101,560.80 × 39,595.20
  4. Step 4: Simplify right side
    67,646.40x = 4,021,320,188.16
  5. Step 5: Solve for x
    x = 4,021,320,188.16/67,646.40
  6. Step 6: Final answer
    x = 59,446.18

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Why These Related Problems?

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