Home / 85,217.20-127,840.65-35,269.90

Finding the Fourth Proportional to 85,217.20, 127,840.65 and 35,269.90

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Solution

The fourth proportional to 85,217.20, 127,840.65 and 35,269.90 is: 52,911.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,217.20 : 127,840.65 = 35,269.90 : x
  2. Step 2: Convert to fraction form
    85,217.20/127,840.65 = 35,269.90/x
  3. Step 3: Cross multiply
    85,217.20x = 127,840.65 × 35,269.90
  4. Step 4: Simplify right side
    85,217.20x = 4,508,926,941.44
  5. Step 5: Solve for x
    x = 4,508,926,941.44/85,217.20
  6. Step 6: Final answer
    x = 52,911.00

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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.