Home / 71,916.20-99,257.04-45,081.72

Finding the Fourth Proportional to 71,916.20, 99,257.04 and 45,081.72

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Solution

The fourth proportional to 71,916.20, 99,257.04 and 45,081.72 is: 62,220.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,916.20 : 99,257.04 = 45,081.72 : x
  2. Step 2: Convert to fraction form
    71,916.20/99,257.04 = 45,081.72/x
  3. Step 3: Cross multiply
    71,916.20x = 99,257.04 × 45,081.72
  4. Step 4: Simplify right side
    71,916.20x = 4,474,678,085.31
  5. Step 5: Solve for x
    x = 4,474,678,085.31/71,916.20
  6. Step 6: Final answer
    x = 62,220.72

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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.