Home / 71,841.18-99,143.91-40,010.08

Finding the Fourth Proportional to 71,841.18, 99,143.91 and 40,010.08

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Solution

The fourth proportional to 71,841.18, 99,143.91 and 40,010.08 is: 55,215.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,841.18 : 99,143.91 = 40,010.08 : x
  2. Step 2: Convert to fraction form
    71,841.18/99,143.91 = 40,010.08/x
  3. Step 3: Cross multiply
    71,841.18x = 99,143.91 × 40,010.08
  4. Step 4: Simplify right side
    71,841.18x = 3,966,755,623.63
  5. Step 5: Solve for x
    x = 3,966,755,623.63/71,841.18
  6. Step 6: Final answer
    x = 55,215.62

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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.