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Finding the Fourth Proportional to 98,433.20, 147,625.80 and 28,305.20

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Solution

The fourth proportional to 98,433.20, 147,625.80 and 28,305.20 is: 42,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,433.20 : 147,625.80 = 28,305.20 : x
  2. Step 2: Convert to fraction form
    98,433.20/147,625.80 = 28,305.20/x
  3. Step 3: Cross multiply
    98,433.20x = 147,625.80 × 28,305.20
  4. Step 4: Simplify right side
    98,433.20x = 4,178,577,794.16
  5. Step 5: Solve for x
    x = 4,178,577,794.16/98,433.20
  6. Step 6: Final answer
    x = 42,450.90

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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.