Home / 74,415.90-111,624.16-18,256.38

Finding the Fourth Proportional to 74,415.90, 111,624.16 and 18,256.38

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Solution

The fourth proportional to 74,415.90, 111,624.16 and 18,256.38 is: 27,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.90 : 111,624.16 = 18,256.38 : x
  2. Step 2: Convert to fraction form
    74,415.90/111,624.16 = 18,256.38/x
  3. Step 3: Cross multiply
    74,415.90x = 111,624.16 × 18,256.38
  4. Step 4: Simplify right side
    74,415.90x = 2,037,853,082.14
  5. Step 5: Solve for x
    x = 2,037,853,082.14/74,415.90
  6. Step 6: Final answer
    x = 27,384.65

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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.