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Finding the Fourth Proportional to 85,304.70, 127,957.05 and 40,908.60

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Solution

The fourth proportional to 85,304.70, 127,957.05 and 40,908.60 is: 61,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,304.70 : 127,957.05 = 40,908.60 : x
  2. Step 2: Convert to fraction form
    85,304.70/127,957.05 = 40,908.60/x
  3. Step 3: Cross multiply
    85,304.70x = 127,957.05 × 40,908.60
  4. Step 4: Simplify right side
    85,304.70x = 5,234,543,775.63
  5. Step 5: Solve for x
    x = 5,234,543,775.63/85,304.70
  6. Step 6: Final answer
    x = 61,362.90

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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.