Home / 74,429.18-111,634.96-21,125.86

Finding the Fourth Proportional to 74,429.18, 111,634.96 and 21,125.86

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Solution

The fourth proportional to 74,429.18, 111,634.96 and 21,125.86 is: 31,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.18 : 111,634.96 = 21,125.86 : x
  2. Step 2: Convert to fraction form
    74,429.18/111,634.96 = 21,125.86/x
  3. Step 3: Cross multiply
    74,429.18x = 111,634.96 × 21,125.86
  4. Step 4: Simplify right side
    74,429.18x = 2,358,384,536.07
  5. Step 5: Solve for x
    x = 2,358,384,536.07/74,429.18
  6. Step 6: Final answer
    x = 31,686.29

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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.