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Finding the Fourth Proportional to 99,888.80, 137,850.73 and 57,447.36

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Solution

The fourth proportional to 99,888.80, 137,850.73 and 57,447.36 is: 79,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,888.80 : 137,850.73 = 57,447.36 : x
  2. Step 2: Convert to fraction form
    99,888.80/137,850.73 = 57,447.36/x
  3. Step 3: Cross multiply
    99,888.80x = 137,850.73 × 57,447.36
  4. Step 4: Simplify right side
    99,888.80x = 7,919,160,368.95
  5. Step 5: Solve for x
    x = 7,919,160,368.95/99,888.80
  6. Step 6: Final answer
    x = 79,279.77

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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.