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Finding the Fourth Proportional to 89,754.95, 134,657.40 and 39,158.40

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Solution

The fourth proportional to 89,754.95, 134,657.40 and 39,158.40 is: 58,748.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,754.95 : 134,657.40 = 39,158.40 : x
  2. Step 2: Convert to fraction form
    89,754.95/134,657.40 = 39,158.40/x
  3. Step 3: Cross multiply
    89,754.95x = 134,657.40 × 39,158.40
  4. Step 4: Simplify right side
    89,754.95x = 5,272,968,983.97
  5. Step 5: Solve for x
    x = 5,272,968,983.97/89,754.95
  6. Step 6: Final answer
    x = 58,748.50

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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.