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Finding the Fourth Proportional to 40,980.52, 61,470.90 and 11,398.38

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Solution

The fourth proportional to 40,980.52, 61,470.90 and 11,398.38 is: 17,097.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,980.52 : 61,470.90 = 11,398.38 : x
  2. Step 2: Convert to fraction form
    40,980.52/61,470.90 = 11,398.38/x
  3. Step 3: Cross multiply
    40,980.52x = 61,470.90 × 11,398.38
  4. Step 4: Simplify right side
    40,980.52x = 700,668,878.84
  5. Step 5: Solve for x
    x = 700,668,878.84/40,980.52
  6. Step 6: Final answer
    x = 17,097.61

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1.5x scale

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.