Home / 61,680.38-85,134.87-40,223.61

Finding the Fourth Proportional to 61,680.38, 85,134.87 and 40,223.61

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Solution

The fourth proportional to 61,680.38, 85,134.87 and 40,223.61 is: 55,518.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,680.38 : 85,134.87 = 40,223.61 : x
  2. Step 2: Convert to fraction form
    61,680.38/85,134.87 = 40,223.61/x
  3. Step 3: Cross multiply
    61,680.38x = 85,134.87 × 40,223.61
  4. Step 4: Simplify right side
    61,680.38x = 3,424,431,808.28
  5. Step 5: Solve for x
    x = 3,424,431,808.28/61,680.38
  6. Step 6: Final answer
    x = 55,518.98

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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.