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Finding the Fourth Proportional to 39,456.40, 59,040.60 and 29,088.40

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Solution

The fourth proportional to 39,456.40, 59,040.60 and 29,088.40 is: 43,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,456.40 : 59,040.60 = 29,088.40 : x
  2. Step 2: Convert to fraction form
    39,456.40/59,040.60 = 29,088.40/x
  3. Step 3: Cross multiply
    39,456.40x = 59,040.60 × 29,088.40
  4. Step 4: Simplify right side
    39,456.40x = 1,717,396,589.04
  5. Step 5: Solve for x
    x = 1,717,396,589.04/39,456.40
  6. Step 6: Final answer
    x = 43,526.44

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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.