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Finding the Fourth Proportional to 100,029.33, 138,038.58 and 54,704.97

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Solution

The fourth proportional to 100,029.33, 138,038.58 and 54,704.97 is: 75,491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,029.33 : 138,038.58 = 54,704.97 : x
  2. Step 2: Convert to fraction form
    100,029.33/138,038.58 = 54,704.97/x
  3. Step 3: Cross multiply
    100,029.33x = 138,038.58 × 54,704.97
  4. Step 4: Simplify right side
    100,029.33x = 7,551,396,377.74
  5. Step 5: Solve for x
    x = 7,551,396,377.74/100,029.33
  6. Step 6: Final answer
    x = 75,491.82

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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.