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Finding the Fourth Proportional to 39,889.77, 59,829.99 and 10,305.28

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Solution

The fourth proportional to 39,889.77, 59,829.99 and 10,305.28 is: 15,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.77 : 59,829.99 = 10,305.28 : x
  2. Step 2: Convert to fraction form
    39,889.77/59,829.99 = 10,305.28/x
  3. Step 3: Cross multiply
    39,889.77x = 59,829.99 × 10,305.28
  4. Step 4: Simplify right side
    39,889.77x = 616,564,799.35
  5. Step 5: Solve for x
    x = 616,564,799.35/39,889.77
  6. Step 6: Final answer
    x = 15,456.71

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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.