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Finding the Fourth Proportional to 61,679.88, 85,121.46 and 34,831.08

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Solution

The fourth proportional to 61,679.88, 85,121.46 and 34,831.08 is: 48,068.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.88 : 85,121.46 = 34,831.08 : x
  2. Step 2: Convert to fraction form
    61,679.88/85,121.46 = 34,831.08/x
  3. Step 3: Cross multiply
    61,679.88x = 85,121.46 × 34,831.08
  4. Step 4: Simplify right side
    61,679.88x = 2,964,872,382.98
  5. Step 5: Solve for x
    x = 2,964,872,382.98/61,679.88
  6. Step 6: Final answer
    x = 48,068.71

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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.