Home / 61,690.11-85,043.25-40,432.47

Finding the Fourth Proportional to 61,690.11, 85,043.25 and 40,432.47

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Solution

The fourth proportional to 61,690.11, 85,043.25 and 40,432.47 is: 55,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.11 : 85,043.25 = 40,432.47 : x
  2. Step 2: Convert to fraction form
    61,690.11/85,043.25 = 40,432.47/x
  3. Step 3: Cross multiply
    61,690.11x = 85,043.25 × 40,432.47
  4. Step 4: Simplify right side
    61,690.11x = 3,438,508,654.33
  5. Step 5: Solve for x
    x = 3,438,508,654.33/61,690.11
  6. Step 6: Final answer
    x = 55,738.41

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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.