Home / 74,488.91-111,733.10-30,115.13

Finding the Fourth Proportional to 74,488.91, 111,733.10 and 30,115.13

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Solution

The fourth proportional to 74,488.91, 111,733.10 and 30,115.13 is: 45,172.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,488.91 : 111,733.10 = 30,115.13 : x
  2. Step 2: Convert to fraction form
    74,488.91/111,733.10 = 30,115.13/x
  3. Step 3: Cross multiply
    74,488.91x = 111,733.10 × 30,115.13
  4. Step 4: Simplify right side
    74,488.91x = 3,364,856,681.23
  5. Step 5: Solve for x
    x = 3,364,856,681.23/74,488.91
  6. Step 6: Final answer
    x = 45,172.59

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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.