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Finding the Fourth Proportional to 90,358.89, 124,698.49 and 54,541.91

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Solution

The fourth proportional to 90,358.89, 124,698.49 and 54,541.91 is: 75,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,358.89 : 124,698.49 = 54,541.91 : x
  2. Step 2: Convert to fraction form
    90,358.89/124,698.49 = 54,541.91/x
  3. Step 3: Cross multiply
    90,358.89x = 124,698.49 × 54,541.91
  4. Step 4: Simplify right side
    90,358.89x = 6,801,293,292.68
  5. Step 5: Solve for x
    x = 6,801,293,292.68/90,358.89
  6. Step 6: Final answer
    x = 75,269.77

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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.