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Finding the Fourth Proportional to 72,843.20, 109,244.80 and 46,149.12

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Solution

The fourth proportional to 72,843.20, 109,244.80 and 46,149.12 is: 69,211.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,843.20 : 109,244.80 = 46,149.12 : x
  2. Step 2: Convert to fraction form
    72,843.20/109,244.80 = 46,149.12/x
  3. Step 3: Cross multiply
    72,843.20x = 109,244.80 × 46,149.12
  4. Step 4: Simplify right side
    72,843.20x = 5,041,551,384.58
  5. Step 5: Solve for x
    x = 5,041,551,384.58/72,843.20
  6. Step 6: Final answer
    x = 69,211.01

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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.