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Finding the Fourth Proportional to 64,896.40, 97,402.20 and 55,565.20

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Solution

The fourth proportional to 64,896.40, 97,402.20 and 55,565.20 is: 83,397.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,896.40 : 97,402.20 = 55,565.20 : x
  2. Step 2: Convert to fraction form
    64,896.40/97,402.20 = 55,565.20/x
  3. Step 3: Cross multiply
    64,896.40x = 97,402.20 × 55,565.20
  4. Step 4: Simplify right side
    64,896.40x = 5,412,172,723.44
  5. Step 5: Solve for x
    x = 5,412,172,723.44/64,896.40
  6. Step 6: Final answer
    x = 83,397.12

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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.