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Finding the Fourth Proportional to 89,929.80, 134,894.70 and 30,760.20

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Solution

The fourth proportional to 89,929.80, 134,894.70 and 30,760.20 is: 46,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,929.80 : 134,894.70 = 30,760.20 : x
  2. Step 2: Convert to fraction form
    89,929.80/134,894.70 = 30,760.20/x
  3. Step 3: Cross multiply
    89,929.80x = 134,894.70 × 30,760.20
  4. Step 4: Simplify right side
    89,929.80x = 4,149,387,950.94
  5. Step 5: Solve for x
    x = 4,149,387,950.94/89,929.80
  6. Step 6: Final answer
    x = 46,140.30

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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.