Home / 66,215.55-91,377.36-36,000.78

Finding the Fourth Proportional to 66,215.55, 91,377.36 and 36,000.78

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Solution

The fourth proportional to 66,215.55, 91,377.36 and 36,000.78 is: 49,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,215.55 : 91,377.36 = 36,000.78 : x
  2. Step 2: Convert to fraction form
    66,215.55/91,377.36 = 36,000.78/x
  3. Step 3: Cross multiply
    66,215.55x = 91,377.36 × 36,000.78
  4. Step 4: Simplify right side
    66,215.55x = 3,289,656,234.34
  5. Step 5: Solve for x
    x = 3,289,656,234.34/66,215.55
  6. Step 6: Final answer
    x = 49,681.02

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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.