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Finding the Fourth Proportional to 66,876.96, 99,725.92 and 66,277.28

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Solution

The fourth proportional to 66,876.96, 99,725.92 and 66,277.28 is: 98,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,876.96 : 99,725.92 = 66,277.28 : x
  2. Step 2: Convert to fraction form
    66,876.96/99,725.92 = 66,277.28/x
  3. Step 3: Cross multiply
    66,876.96x = 99,725.92 × 66,277.28
  4. Step 4: Simplify right side
    66,876.96x = 6,609,562,723.10
  5. Step 5: Solve for x
    x = 6,609,562,723.10/66,876.96
  6. Step 6: Final answer
    x = 98,831.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.