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Finding the Fourth Proportional to 70,120.52, 96,766.31 and 38,289.45

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Solution

The fourth proportional to 70,120.52, 96,766.31 and 38,289.45 is: 52,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,120.52 : 96,766.31 = 38,289.45 : x
  2. Step 2: Convert to fraction form
    70,120.52/96,766.31 = 38,289.45/x
  3. Step 3: Cross multiply
    70,120.52x = 96,766.31 × 38,289.45
  4. Step 4: Simplify right side
    70,120.52x = 3,705,128,113.15
  5. Step 5: Solve for x
    x = 3,705,128,113.15/70,120.52
  6. Step 6: Final answer
    x = 52,839.43

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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.