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Finding the Fourth Proportional to 70,105.79, 96,747.65 and 38,274.90

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Solution

The fourth proportional to 70,105.79, 96,747.65 and 38,274.90 is: 52,820.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,105.79 : 96,747.65 = 38,274.90 : x
  2. Step 2: Convert to fraction form
    70,105.79/96,747.65 = 38,274.90/x
  3. Step 3: Cross multiply
    70,105.79x = 96,747.65 × 38,274.90
  4. Step 4: Simplify right side
    70,105.79x = 3,703,006,437.61
  5. Step 5: Solve for x
    x = 3,703,006,437.61/70,105.79
  6. Step 6: Final answer
    x = 52,820.27

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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.