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Finding the Fourth Proportional to 98,350.77, 135,593.42 and 64,300.72

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Solution

The fourth proportional to 98,350.77, 135,593.42 and 64,300.72 is: 88,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,350.77 : 135,593.42 = 64,300.72 : x
  2. Step 2: Convert to fraction form
    98,350.77/135,593.42 = 64,300.72/x
  3. Step 3: Cross multiply
    98,350.77x = 135,593.42 × 64,300.72
  4. Step 4: Simplify right side
    98,350.77x = 8,718,753,872.78
  5. Step 5: Solve for x
    x = 8,718,753,872.78/98,350.77
  6. Step 6: Final answer
    x = 88,649.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.