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Finding the Fourth Proportional to 78,868.59, 108,840.92 and 43,060.88

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Solution

The fourth proportional to 78,868.59, 108,840.92 and 43,060.88 is: 59,425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,868.59 : 108,840.92 = 43,060.88 : x
  2. Step 2: Convert to fraction form
    78,868.59/108,840.92 = 43,060.88/x
  3. Step 3: Cross multiply
    78,868.59x = 108,840.92 × 43,060.88
  4. Step 4: Simplify right side
    78,868.59x = 4,686,785,035.70
  5. Step 5: Solve for x
    x = 4,686,785,035.70/78,868.59
  6. Step 6: Final answer
    x = 59,425.24

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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.