Home / 81,287.42-112,141.06-62,391.74

Finding the Fourth Proportional to 81,287.42, 112,141.06 and 62,391.74

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Solution

The fourth proportional to 81,287.42, 112,141.06 and 62,391.74 is: 86,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,287.42 : 112,141.06 = 62,391.74 : x
  2. Step 2: Convert to fraction form
    81,287.42/112,141.06 = 62,391.74/x
  3. Step 3: Cross multiply
    81,287.42x = 112,141.06 × 62,391.74
  4. Step 4: Simplify right side
    81,287.42x = 6,996,675,142.16
  5. Step 5: Solve for x
    x = 6,996,675,142.16/81,287.42
  6. Step 6: Final answer
    x = 86,073.29

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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.