Home / 40,720.32-61,081.68-14,443.20

Finding the Fourth Proportional to 40,720.32, 61,081.68 and 14,443.20

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Solution

The fourth proportional to 40,720.32, 61,081.68 and 14,443.20 is: 21,665.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,720.32 : 61,081.68 = 14,443.20 : x
  2. Step 2: Convert to fraction form
    40,720.32/61,081.68 = 14,443.20/x
  3. Step 3: Cross multiply
    40,720.32x = 61,081.68 × 14,443.20
  4. Step 4: Simplify right side
    40,720.32x = 882,214,920.58
  5. Step 5: Solve for x
    x = 882,214,920.58/40,720.32
  6. Step 6: Final answer
    x = 21,665.23

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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.