Home / 89,271.22-123,138.18-62,403.92

Finding the Fourth Proportional to 89,271.22, 123,138.18 and 62,403.92

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Solution

The fourth proportional to 89,271.22, 123,138.18 and 62,403.92 is: 86,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,271.22 : 123,138.18 = 62,403.92 : x
  2. Step 2: Convert to fraction form
    89,271.22/123,138.18 = 62,403.92/x
  3. Step 3: Cross multiply
    89,271.22x = 123,138.18 × 62,403.92
  4. Step 4: Simplify right side
    89,271.22x = 7,684,305,133.67
  5. Step 5: Solve for x
    x = 7,684,305,133.67/89,271.22
  6. Step 6: Final answer
    x = 86,078.19

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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.