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Finding the Fourth Proportional to 86,355.36, 129,549 and 33,761.52

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Solution

The fourth proportional to 86,355.36, 129,549 and 33,761.52 is: 50,648.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,355.36 : 129,549 = 33,761.52 : x
  2. Step 2: Convert to fraction form
    86,355.36/129,549 = 33,761.52/x
  3. Step 3: Cross multiply
    86,355.36x = 129,549 × 33,761.52
  4. Step 4: Simplify right side
    86,355.36x = 4,373,771,154.48
  5. Step 5: Solve for x
    x = 4,373,771,154.48/86,355.36
  6. Step 6: Final answer
    x = 50,648.52

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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.