Home / 89,169.91-123,070.08-67,730.63

Finding the Fourth Proportional to 89,169.91, 123,070.08 and 67,730.63

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Solution

The fourth proportional to 89,169.91, 123,070.08 and 67,730.63 is: 93,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,169.91 : 123,070.08 = 67,730.63 : x
  2. Step 2: Convert to fraction form
    89,169.91/123,070.08 = 67,730.63/x
  3. Step 3: Cross multiply
    89,169.91x = 123,070.08 × 67,730.63
  4. Step 4: Simplify right side
    89,169.91x = 8,335,613,437.20
  5. Step 5: Solve for x
    x = 8,335,613,437.20/89,169.91
  6. Step 6: Final answer
    x = 93,480.12

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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.