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Finding the Fourth Proportional to 85,117.38, 117,462.80 and 47,392.44

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Solution

The fourth proportional to 85,117.38, 117,462.80 and 47,392.44 is: 65,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,117.38 : 117,462.80 = 47,392.44 : x
  2. Step 2: Convert to fraction form
    85,117.38/117,462.80 = 47,392.44/x
  3. Step 3: Cross multiply
    85,117.38x = 117,462.80 × 47,392.44
  4. Step 4: Simplify right side
    85,117.38x = 5,566,847,876.96
  5. Step 5: Solve for x
    x = 5,566,847,876.96/85,117.38
  6. Step 6: Final answer
    x = 65,402.02

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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.