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Finding the Fourth Proportional to 89,363.61, 134,080.17 and 39,408.48

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Solution

The fourth proportional to 89,363.61, 134,080.17 and 39,408.48 is: 59,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,363.61 : 134,080.17 = 39,408.48 : x
  2. Step 2: Convert to fraction form
    89,363.61/134,080.17 = 39,408.48/x
  3. Step 3: Cross multiply
    89,363.61x = 134,080.17 × 39,408.48
  4. Step 4: Simplify right side
    89,363.61x = 5,283,895,697.84
  5. Step 5: Solve for x
    x = 5,283,895,697.84/89,363.61
  6. Step 6: Final answer
    x = 59,128.05

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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.