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Finding the Fourth Proportional to 64,473.12, 88,982.40 and 39,337.20

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Solution

The fourth proportional to 64,473.12, 88,982.40 and 39,337.20 is: 54,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,473.12 : 88,982.40 = 39,337.20 : x
  2. Step 2: Convert to fraction form
    64,473.12/88,982.40 = 39,337.20/x
  3. Step 3: Cross multiply
    64,473.12x = 88,982.40 × 39,337.20
  4. Step 4: Simplify right side
    64,473.12x = 3,500,318,465.28
  5. Step 5: Solve for x
    x = 3,500,318,465.28/64,473.12
  6. Step 6: Final answer
    x = 54,291.13

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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.