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Finding the Fourth Proportional to 55,422.56, 83,166.95 and 20,365.76

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Solution

The fourth proportional to 55,422.56, 83,166.95 and 20,365.76 is: 30,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,422.56 : 83,166.95 = 20,365.76 : x
  2. Step 2: Convert to fraction form
    55,422.56/83,166.95 = 20,365.76/x
  3. Step 3: Cross multiply
    55,422.56x = 83,166.95 × 20,365.76
  4. Step 4: Simplify right side
    55,422.56x = 1,693,757,778.71
  5. Step 5: Solve for x
    x = 1,693,757,778.71/55,422.56
  6. Step 6: Final answer
    x = 30,560.80

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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.