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Finding the Fourth Proportional to 70,200.60, 96,876.84 and 39,988.74

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Solution

The fourth proportional to 70,200.60, 96,876.84 and 39,988.74 is: 55,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,200.60 : 96,876.84 = 39,988.74 : x
  2. Step 2: Convert to fraction form
    70,200.60/96,876.84 = 39,988.74/x
  3. Step 3: Cross multiply
    70,200.60x = 96,876.84 × 39,988.74
  4. Step 4: Simplify right side
    70,200.60x = 3,873,982,766.78
  5. Step 5: Solve for x
    x = 3,873,982,766.78/70,200.60
  6. Step 6: Final answer
    x = 55,184.47

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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.