Home / 71,989.19-99,328.16-43,689.41

Finding the Fourth Proportional to 71,989.19, 99,328.16 and 43,689.41

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Solution

The fourth proportional to 71,989.19, 99,328.16 and 43,689.41 is: 60,281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,989.19 : 99,328.16 = 43,689.41 : x
  2. Step 2: Convert to fraction form
    71,989.19/99,328.16 = 43,689.41/x
  3. Step 3: Cross multiply
    71,989.19x = 99,328.16 × 43,689.41
  4. Step 4: Simplify right side
    71,989.19x = 4,339,587,991.70
  5. Step 5: Solve for x
    x = 4,339,587,991.70/71,989.19
  6. Step 6: Final answer
    x = 60,281.11

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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.