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Finding the Fourth Proportional to 72,002.40, 107,949.60 and 36,967.20

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Solution

The fourth proportional to 72,002.40, 107,949.60 and 36,967.20 is: 55,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,002.40 : 107,949.60 = 36,967.20 : x
  2. Step 2: Convert to fraction form
    72,002.40/107,949.60 = 36,967.20/x
  3. Step 3: Cross multiply
    72,002.40x = 107,949.60 × 36,967.20
  4. Step 4: Simplify right side
    72,002.40x = 3,990,594,453.12
  5. Step 5: Solve for x
    x = 3,990,594,453.12/72,002.40
  6. Step 6: Final answer
    x = 55,423.08

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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.