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Finding the Fourth Proportional to 70,120.80, 96,767.23 and 39,908.42

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Solution

The fourth proportional to 70,120.80, 96,767.23 and 39,908.42 is: 55,073.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,120.80 : 96,767.23 = 39,908.42 : x
  2. Step 2: Convert to fraction form
    70,120.80/96,767.23 = 39,908.42/x
  3. Step 3: Cross multiply
    70,120.80x = 96,767.23 × 39,908.42
  4. Step 4: Simplify right side
    70,120.80x = 3,861,827,495.58
  5. Step 5: Solve for x
    x = 3,861,827,495.58/70,120.80
  6. Step 6: Final answer
    x = 55,073.92

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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.