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Finding the Fourth Proportional to 42,625.60, 63,861.60 and 36,020.80

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Solution

The fourth proportional to 42,625.60, 63,861.60 and 36,020.80 is: 53,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,625.60 : 63,861.60 = 36,020.80 : x
  2. Step 2: Convert to fraction form
    42,625.60/63,861.60 = 36,020.80/x
  3. Step 3: Cross multiply
    42,625.60x = 63,861.60 × 36,020.80
  4. Step 4: Simplify right side
    42,625.60x = 2,300,345,921.28
  5. Step 5: Solve for x
    x = 2,300,345,921.28/42,625.60
  6. Step 6: Final answer
    x = 53,966.30

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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.