Home / 81,534.69-112,470.21-51,272.10

Finding the Fourth Proportional to 81,534.69, 112,470.21 and 51,272.10

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Solution

The fourth proportional to 81,534.69, 112,470.21 and 51,272.10 is: 70,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.69 : 112,470.21 = 51,272.10 : x
  2. Step 2: Convert to fraction form
    81,534.69/112,470.21 = 51,272.10/x
  3. Step 3: Cross multiply
    81,534.69x = 112,470.21 × 51,272.10
  4. Step 4: Simplify right side
    81,534.69x = 5,766,583,854.14
  5. Step 5: Solve for x
    x = 5,766,583,854.14/81,534.69
  6. Step 6: Final answer
    x = 70,725.53

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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.