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Finding the Fourth Proportional to 66,042.82, 91,115.17 and 43,394.01

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Solution

The fourth proportional to 66,042.82, 91,115.17 and 43,394.01 is: 59,868.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.82 : 91,115.17 = 43,394.01 : x
  2. Step 2: Convert to fraction form
    66,042.82/91,115.17 = 43,394.01/x
  3. Step 3: Cross multiply
    66,042.82x = 91,115.17 × 43,394.01
  4. Step 4: Simplify right side
    66,042.82x = 3,953,852,598.13
  5. Step 5: Solve for x
    x = 3,953,852,598.13/66,042.82
  6. Step 6: Final answer
    x = 59,868.02

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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.