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Finding the Fourth Proportional to 69,881.94, 96,432.20 and 39,667.88

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Solution

The fourth proportional to 69,881.94, 96,432.20 and 39,667.88 is: 54,738.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,881.94 : 96,432.20 = 39,667.88 : x
  2. Step 2: Convert to fraction form
    69,881.94/96,432.20 = 39,667.88/x
  3. Step 3: Cross multiply
    69,881.94x = 96,432.20 × 39,667.88
  4. Step 4: Simplify right side
    69,881.94x = 3,825,260,937.74
  5. Step 5: Solve for x
    x = 3,825,260,937.74/69,881.94
  6. Step 6: Final answer
    x = 54,738.91

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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.