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Finding the Fourth Proportional to 71,843.04, 99,021.90 and 49,142.89

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Solution

The fourth proportional to 71,843.04, 99,021.90 and 49,142.89 is: 67,734.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,843.04 : 99,021.90 = 49,142.89 : x
  2. Step 2: Convert to fraction form
    71,843.04/99,021.90 = 49,142.89/x
  3. Step 3: Cross multiply
    71,843.04x = 99,021.90 × 49,142.89
  4. Step 4: Simplify right side
    71,843.04x = 4,866,222,339.29
  5. Step 5: Solve for x
    x = 4,866,222,339.29/71,843.04
  6. Step 6: Final answer
    x = 67,734.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.