Home / 66,971.16-100,456.72-52,191.12

Finding the Fourth Proportional to 66,971.16, 100,456.72 and 52,191.12

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Solution

The fourth proportional to 66,971.16, 100,456.72 and 52,191.12 is: 78,286.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,971.16 : 100,456.72 = 52,191.12 : x
  2. Step 2: Convert to fraction form
    66,971.16/100,456.72 = 52,191.12/x
  3. Step 3: Cross multiply
    66,971.16x = 100,456.72 × 52,191.12
  4. Step 4: Simplify right side
    66,971.16x = 5,242,948,728.33
  5. Step 5: Solve for x
    x = 5,242,948,728.33/66,971.16
  6. Step 6: Final answer
    x = 78,286.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.