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Finding the Fourth Proportional to 81,580.66, 122,370.98 and 28,992.22

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Solution

The fourth proportional to 81,580.66, 122,370.98 and 28,992.22 is: 43,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.66 : 122,370.98 = 28,992.22 : x
  2. Step 2: Convert to fraction form
    81,580.66/122,370.98 = 28,992.22/x
  3. Step 3: Cross multiply
    81,580.66x = 122,370.98 × 28,992.22
  4. Step 4: Simplify right side
    81,580.66x = 3,547,806,373.78
  5. Step 5: Solve for x
    x = 3,547,806,373.78/81,580.66
  6. Step 6: Final answer
    x = 43,488.33

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.