Home / 81,641.12-112,669.80-54,370.44

Finding the Fourth Proportional to 81,641.12, 112,669.80 and 54,370.44

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Solution

The fourth proportional to 81,641.12, 112,669.80 and 54,370.44 is: 75,034.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,641.12 : 112,669.80 = 54,370.44 : x
  2. Step 2: Convert to fraction form
    81,641.12/112,669.80 = 54,370.44/x
  3. Step 3: Cross multiply
    81,641.12x = 112,669.80 × 54,370.44
  4. Step 4: Simplify right side
    81,641.12x = 6,125,906,600.71
  5. Step 5: Solve for x
    x = 6,125,906,600.71/81,641.12
  6. Step 6: Final answer
    x = 75,034.57

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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.