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Finding the Fourth Proportional to 69,134.40, 95,401.80 and 38,920.32

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Solution

The fourth proportional to 69,134.40, 95,401.80 and 38,920.32 is: 53,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,134.40 : 95,401.80 = 38,920.32 : x
  2. Step 2: Convert to fraction form
    69,134.40/95,401.80 = 38,920.32/x
  3. Step 3: Cross multiply
    69,134.40x = 95,401.80 × 38,920.32
  4. Step 4: Simplify right side
    69,134.40x = 3,713,068,584.58
  5. Step 5: Solve for x
    x = 3,713,068,584.58/69,134.40
  6. Step 6: Final answer
    x = 53,707.97

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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.