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Finding the Fourth Proportional to 72,488.78, 100,026.12 and 43,825.71

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Solution

The fourth proportional to 72,488.78, 100,026.12 and 43,825.71 is: 60,474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,488.78 : 100,026.12 = 43,825.71 : x
  2. Step 2: Convert to fraction form
    72,488.78/100,026.12 = 43,825.71/x
  3. Step 3: Cross multiply
    72,488.78x = 100,026.12 × 43,825.71
  4. Step 4: Simplify right side
    72,488.78x = 4,383,715,727.55
  5. Step 5: Solve for x
    x = 4,383,715,727.55/72,488.78
  6. Step 6: Final answer
    x = 60,474.40

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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.