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Finding the Fourth Proportional to 70,020.68, 96,628.53 and 38,189.58

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Solution

The fourth proportional to 70,020.68, 96,628.53 and 38,189.58 is: 52,701.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,020.68 : 96,628.53 = 38,189.58 : x
  2. Step 2: Convert to fraction form
    70,020.68/96,628.53 = 38,189.58/x
  3. Step 3: Cross multiply
    70,020.68x = 96,628.53 × 38,189.58
  4. Step 4: Simplify right side
    70,020.68x = 3,690,202,976.72
  5. Step 5: Solve for x
    x = 3,690,202,976.72/70,020.68
  6. Step 6: Final answer
    x = 52,701.62

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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.