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Finding the Fourth Proportional to 78,873.18, 108,847.59 and 43,065.93

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Solution

The fourth proportional to 78,873.18, 108,847.59 and 43,065.93 is: 59,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,873.18 : 108,847.59 = 43,065.93 : x
  2. Step 2: Convert to fraction form
    78,873.18/108,847.59 = 43,065.93/x
  3. Step 3: Cross multiply
    78,873.18x = 108,847.59 × 43,065.93
  4. Step 4: Simplify right side
    78,873.18x = 4,687,622,691.61
  5. Step 5: Solve for x
    x = 4,687,622,691.61/78,873.18
  6. Step 6: Final answer
    x = 59,432.40

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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.