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Finding the Fourth Proportional to 89,753.84, 134,655.70 and 39,157.28

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Solution

The fourth proportional to 89,753.84, 134,655.70 and 39,157.28 is: 58,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,753.84 : 134,655.70 = 39,157.28 : x
  2. Step 2: Convert to fraction form
    89,753.84/134,655.70 = 39,157.28/x
  3. Step 3: Cross multiply
    89,753.84x = 134,655.70 × 39,157.28
  4. Step 4: Simplify right side
    89,753.84x = 5,272,750,948.50
  5. Step 5: Solve for x
    x = 5,272,750,948.50/89,753.84
  6. Step 6: Final answer
    x = 58,746.80

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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.