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Finding the Fourth Proportional to 85,658.61, 118,207.42 and 47,417.33

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Solution

The fourth proportional to 85,658.61, 118,207.42 and 47,417.33 is: 65,435.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,658.61 : 118,207.42 = 47,417.33 : x
  2. Step 2: Convert to fraction form
    85,658.61/118,207.42 = 47,417.33/x
  3. Step 3: Cross multiply
    85,658.61x = 118,207.42 × 47,417.33
  4. Step 4: Simplify right side
    85,658.61x = 5,605,080,419.56
  5. Step 5: Solve for x
    x = 5,605,080,419.56/85,658.61
  6. Step 6: Final answer
    x = 65,435.11

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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.