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Finding the Fourth Proportional to 79,241.80, 118,862.70 and 51,248.20

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Solution

The fourth proportional to 79,241.80, 118,862.70 and 51,248.20 is: 76,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,241.80 : 118,862.70 = 51,248.20 : x
  2. Step 2: Convert to fraction form
    79,241.80/118,862.70 = 51,248.20/x
  3. Step 3: Cross multiply
    79,241.80x = 118,862.70 × 51,248.20
  4. Step 4: Simplify right side
    79,241.80x = 6,091,499,422.14
  5. Step 5: Solve for x
    x = 6,091,499,422.14/79,241.80
  6. Step 6: Final answer
    x = 76,872.30

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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.