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Finding the Fourth Proportional to 71,570.88, 98,767.44 and 39,306.12

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Solution

The fourth proportional to 71,570.88, 98,767.44 and 39,306.12 is: 54,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.88 : 98,767.44 = 39,306.12 : x
  2. Step 2: Convert to fraction form
    71,570.88/98,767.44 = 39,306.12/x
  3. Step 3: Cross multiply
    71,570.88x = 98,767.44 × 39,306.12
  4. Step 4: Simplify right side
    71,570.88x = 3,882,164,848.73
  5. Step 5: Solve for x
    x = 3,882,164,848.73/71,570.88
  6. Step 6: Final answer
    x = 54,242.24

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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.