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Finding the Fourth Proportional to 99,888.67, 137,850.56 and 57,447.24

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Solution

The fourth proportional to 99,888.67, 137,850.56 and 57,447.24 is: 79,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,888.67 : 137,850.56 = 57,447.24 : x
  2. Step 2: Convert to fraction form
    99,888.67/137,850.56 = 57,447.24/x
  3. Step 3: Cross multiply
    99,888.67x = 137,850.56 × 57,447.24
  4. Step 4: Simplify right side
    99,888.67x = 7,919,134,204.45
  5. Step 5: Solve for x
    x = 7,919,134,204.45/99,888.67
  6. Step 6: Final answer
    x = 79,279.60

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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.