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Finding the Fourth Proportional to 70,281.60, 96,989.31 and 38,451.84

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Solution

The fourth proportional to 70,281.60, 96,989.31 and 38,451.84 is: 53,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.60 : 96,989.31 = 38,451.84 : x
  2. Step 2: Convert to fraction form
    70,281.60/96,989.31 = 38,451.84/x
  3. Step 3: Cross multiply
    70,281.60x = 96,989.31 × 38,451.84
  4. Step 4: Simplify right side
    70,281.60x = 3,729,417,429.83
  5. Step 5: Solve for x
    x = 3,729,417,429.83/70,281.60
  6. Step 6: Final answer
    x = 53,063.92

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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.