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Finding the Fourth Proportional to 40,273.60, 60,420.80 and 15,314.08

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Solution

The fourth proportional to 40,273.60, 60,420.80 and 15,314.08 is: 22,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,273.60 : 60,420.80 = 15,314.08 : x
  2. Step 2: Convert to fraction form
    40,273.60/60,420.80 = 15,314.08/x
  3. Step 3: Cross multiply
    40,273.60x = 60,420.80 × 15,314.08
  4. Step 4: Simplify right side
    40,273.60x = 925,288,964.86
  5. Step 5: Solve for x
    x = 925,288,964.86/40,273.60
  6. Step 6: Final answer
    x = 22,975.07

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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.