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Finding the Fourth Proportional to 40,257.80, 60,386.70 and 34,620.20

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Solution

The fourth proportional to 40,257.80, 60,386.70 and 34,620.20 is: 51,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,257.80 : 60,386.70 = 34,620.20 : x
  2. Step 2: Convert to fraction form
    40,257.80/60,386.70 = 34,620.20/x
  3. Step 3: Cross multiply
    40,257.80x = 60,386.70 × 34,620.20
  4. Step 4: Simplify right side
    40,257.80x = 2,090,599,631.34
  5. Step 5: Solve for x
    x = 2,090,599,631.34/40,257.80
  6. Step 6: Final answer
    x = 51,930.30

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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.