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Finding the Fourth Proportional to 78,773.16, 118,159.76 and 26,182.64

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Solution

The fourth proportional to 78,773.16, 118,159.76 and 26,182.64 is: 39,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,773.16 : 118,159.76 = 26,182.64 : x
  2. Step 2: Convert to fraction form
    78,773.16/118,159.76 = 26,182.64/x
  3. Step 3: Cross multiply
    78,773.16x = 118,159.76 × 26,182.64
  4. Step 4: Simplify right side
    78,773.16x = 3,093,734,819.42
  5. Step 5: Solve for x
    x = 3,093,734,819.42/78,773.16
  6. Step 6: Final answer
    x = 39,273.97

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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.