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Finding the Fourth Proportional to 70,211.81, 96,892.30 and 38,380.94

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Solution

The fourth proportional to 70,211.81, 96,892.30 and 38,380.94 is: 52,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,211.81 : 96,892.30 = 38,380.94 : x
  2. Step 2: Convert to fraction form
    70,211.81/96,892.30 = 38,380.94/x
  3. Step 3: Cross multiply
    70,211.81x = 96,892.30 × 38,380.94
  4. Step 4: Simplify right side
    70,211.81x = 3,718,817,479.62
  5. Step 5: Solve for x
    x = 3,718,817,479.62/70,211.81
  6. Step 6: Final answer
    x = 52,965.70

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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.