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Finding the Fourth Proportional to 69,893.10, 104,332.92 and 64,689.87

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Solution

The fourth proportional to 69,893.10, 104,332.92 and 64,689.87 is: 96,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,893.10 : 104,332.92 = 64,689.87 : x
  2. Step 2: Convert to fraction form
    69,893.10/104,332.92 = 64,689.87/x
  3. Step 3: Cross multiply
    69,893.10x = 104,332.92 × 64,689.87
  4. Step 4: Simplify right side
    69,893.10x = 6,749,283,031.52
  5. Step 5: Solve for x
    x = 6,749,283,031.52/69,893.10
  6. Step 6: Final answer
    x = 96,565.80

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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.