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Finding the Fourth Proportional to 81,562.33, 112,540.39 and 49,290.40

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Solution

The fourth proportional to 81,562.33, 112,540.39 and 49,290.40 is: 68,011.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,562.33 : 112,540.39 = 49,290.40 : x
  2. Step 2: Convert to fraction form
    81,562.33/112,540.39 = 49,290.40/x
  3. Step 3: Cross multiply
    81,562.33x = 112,540.39 × 49,290.40
  4. Step 4: Simplify right side
    81,562.33x = 5,547,160,839.26
  5. Step 5: Solve for x
    x = 5,547,160,839.26/81,562.33
  6. Step 6: Final answer
    x = 68,011.31

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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.