Home / 77,042.32-115,567.80-21,634

Finding the Fourth Proportional to 77,042.32, 115,567.80 and 21,634

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Solution

The fourth proportional to 77,042.32, 115,567.80 and 21,634 is: 32,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,042.32 : 115,567.80 = 21,634 : x
  2. Step 2: Convert to fraction form
    77,042.32/115,567.80 = 21,634/x
  3. Step 3: Cross multiply
    77,042.32x = 115,567.80 × 21,634
  4. Step 4: Simplify right side
    77,042.32x = 2,500,193,785.20
  5. Step 5: Solve for x
    x = 2,500,193,785.20/77,042.32
  6. Step 6: Final answer
    x = 32,452.21

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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.