Home / 81,534.78-112,470.21-51,272.10

Finding the Fourth Proportional to 81,534.78, 112,470.21 and 51,272.10

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Solution

The fourth proportional to 81,534.78, 112,470.21 and 51,272.10 is: 70,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.78 : 112,470.21 = 51,272.10 : x
  2. Step 2: Convert to fraction form
    81,534.78/112,470.21 = 51,272.10/x
  3. Step 3: Cross multiply
    81,534.78x = 112,470.21 × 51,272.10
  4. Step 4: Simplify right side
    81,534.78x = 5,766,583,854.14
  5. Step 5: Solve for x
    x = 5,766,583,854.14/81,534.78
  6. Step 6: Final answer
    x = 70,725.45

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1.5x scale

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.