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Finding the Fourth Proportional to 85,340.57, 127,971.23 and 49,812.15

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Solution

The fourth proportional to 85,340.57, 127,971.23 and 49,812.15 is: 74,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,340.57 : 127,971.23 = 49,812.15 : x
  2. Step 2: Convert to fraction form
    85,340.57/127,971.23 = 49,812.15/x
  3. Step 3: Cross multiply
    85,340.57x = 127,971.23 × 49,812.15
  4. Step 4: Simplify right side
    85,340.57x = 6,374,522,104.44
  5. Step 5: Solve for x
    x = 6,374,522,104.44/85,340.57
  6. Step 6: Final answer
    x = 74,695.10

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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.