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Finding the Fourth Proportional to 91,278.26, 136,932.96 and 40,695.64

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Solution

The fourth proportional to 91,278.26, 136,932.96 and 40,695.64 is: 61,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,278.26 : 136,932.96 = 40,695.64 : x
  2. Step 2: Convert to fraction form
    91,278.26/136,932.96 = 40,695.64/x
  3. Step 3: Cross multiply
    91,278.26x = 136,932.96 × 40,695.64
  4. Step 4: Simplify right side
    91,278.26x = 5,572,575,110.40
  5. Step 5: Solve for x
    x = 5,572,575,110.40/91,278.26
  6. Step 6: Final answer
    x = 61,050.41

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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.