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Finding the Fourth Proportional to 61,751.26, 85,154.28 and 54,923.72

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Solution

The fourth proportional to 61,751.26, 85,154.28 and 54,923.72 is: 75,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,751.26 : 85,154.28 = 54,923.72 : x
  2. Step 2: Convert to fraction form
    61,751.26/85,154.28 = 54,923.72/x
  3. Step 3: Cross multiply
    61,751.26x = 85,154.28 × 54,923.72
  4. Step 4: Simplify right side
    61,751.26x = 4,676,989,831.52
  5. Step 5: Solve for x
    x = 4,676,989,831.52/61,751.26
  6. Step 6: Final answer
    x = 75,739.18

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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.