Home / 74,081.61-111,140.64-21,490.38

Finding the Fourth Proportional to 74,081.61, 111,140.64 and 21,490.38

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Solution

The fourth proportional to 74,081.61, 111,140.64 and 21,490.38 is: 32,240.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,081.61 : 111,140.64 = 21,490.38 : x
  2. Step 2: Convert to fraction form
    74,081.61/111,140.64 = 21,490.38/x
  3. Step 3: Cross multiply
    74,081.61x = 111,140.64 × 21,490.38
  4. Step 4: Simplify right side
    74,081.61x = 2,388,454,587.04
  5. Step 5: Solve for x
    x = 2,388,454,587.04/74,081.61
  6. Step 6: Final answer
    x = 32,240.86

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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.