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Finding the Fourth Proportional to 90,295.56, 124,568.55 and 54,465.66

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Solution

The fourth proportional to 90,295.56, 124,568.55 and 54,465.66 is: 75,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,295.56 : 124,568.55 = 54,465.66 : x
  2. Step 2: Convert to fraction form
    90,295.56/124,568.55 = 54,465.66/x
  3. Step 3: Cross multiply
    90,295.56x = 124,568.55 × 54,465.66
  4. Step 4: Simplify right side
    90,295.56x = 6,784,708,290.99
  5. Step 5: Solve for x
    x = 6,784,708,290.99/90,295.56
  6. Step 6: Final answer
    x = 75,138.89

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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.