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Finding the Fourth Proportional to 88,254.68, 121,790.54 and 65,694.56

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Solution

The fourth proportional to 88,254.68, 121,790.54 and 65,694.56 is: 90,657.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,254.68 : 121,790.54 = 65,694.56 : x
  2. Step 2: Convert to fraction form
    88,254.68/121,790.54 = 65,694.56/x
  3. Step 3: Cross multiply
    88,254.68x = 121,790.54 × 65,694.56
  4. Step 4: Simplify right side
    88,254.68x = 8,000,975,937.46
  5. Step 5: Solve for x
    x = 8,000,975,937.46/88,254.68
  6. Step 6: Final answer
    x = 90,657.81

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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.