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Finding the Fourth Proportional to 62,975.60, 86,861.40 and 40,598

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Solution

The fourth proportional to 62,975.60, 86,861.40 and 40,598 is: 55,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,975.60 : 86,861.40 = 40,598 : x
  2. Step 2: Convert to fraction form
    62,975.60/86,861.40 = 40,598/x
  3. Step 3: Cross multiply
    62,975.60x = 86,861.40 × 40,598
  4. Step 4: Simplify right side
    62,975.60x = 3,526,399,117.20
  5. Step 5: Solve for x
    x = 3,526,399,117.20/62,975.60
  6. Step 6: Final answer
    x = 55,996.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.