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Finding the Fourth Proportional to 88,707.84, 133,125.12 and 65,395.20

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Solution

The fourth proportional to 88,707.84, 133,125.12 and 65,395.20 is: 98,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,707.84 : 133,125.12 = 65,395.20 : x
  2. Step 2: Convert to fraction form
    88,707.84/133,125.12 = 65,395.20/x
  3. Step 3: Cross multiply
    88,707.84x = 133,125.12 × 65,395.20
  4. Step 4: Simplify right side
    88,707.84x = 8,705,743,847.42
  5. Step 5: Solve for x
    x = 8,705,743,847.42/88,707.84
  6. Step 6: Final answer
    x = 98,139.51

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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.