Home / 81,751.24-122,627.10-56,717.80

Finding the Fourth Proportional to 81,751.24, 122,627.10 and 56,717.80

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Solution

The fourth proportional to 81,751.24, 122,627.10 and 56,717.80 is: 85,076.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.24 : 122,627.10 = 56,717.80 : x
  2. Step 2: Convert to fraction form
    81,751.24/122,627.10 = 56,717.80/x
  3. Step 3: Cross multiply
    81,751.24x = 122,627.10 × 56,717.80
  4. Step 4: Simplify right side
    81,751.24x = 6,955,139,332.38
  5. Step 5: Solve for x
    x = 6,955,139,332.38/81,751.24
  6. Step 6: Final answer
    x = 85,076.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.