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Finding the Fourth Proportional to 70,120.77, 96,766.65 and 38,289.70

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Solution

The fourth proportional to 70,120.77, 96,766.65 and 38,289.70 is: 52,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,120.77 : 96,766.65 = 38,289.70 : x
  2. Step 2: Convert to fraction form
    70,120.77/96,766.65 = 38,289.70/x
  3. Step 3: Cross multiply
    70,120.77x = 96,766.65 × 38,289.70
  4. Step 4: Simplify right side
    70,120.77x = 3,705,165,998.51
  5. Step 5: Solve for x
    x = 3,705,165,998.51/70,120.77
  6. Step 6: Final answer
    x = 52,839.78

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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.