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Finding the Fourth Proportional to 85,461.57, 127,943.28 and 49,813.88

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Solution

The fourth proportional to 85,461.57, 127,943.28 and 49,813.88 is: 74,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,461.57 : 127,943.28 = 49,813.88 : x
  2. Step 2: Convert to fraction form
    85,461.57/127,943.28 = 49,813.88/x
  3. Step 3: Cross multiply
    85,461.57x = 127,943.28 × 49,813.88
  4. Step 4: Simplify right side
    85,461.57x = 6,373,350,557.01
  5. Step 5: Solve for x
    x = 6,373,350,557.01/85,461.57
  6. Step 6: Final answer
    x = 74,575.63

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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.