Home / 56,128.24-84,195.86-18,691.66

Finding the Fourth Proportional to 56,128.24, 84,195.86 and 18,691.66

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Solution

The fourth proportional to 56,128.24, 84,195.86 and 18,691.66 is: 28,038.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,128.24 : 84,195.86 = 18,691.66 : x
  2. Step 2: Convert to fraction form
    56,128.24/84,195.86 = 18,691.66/x
  3. Step 3: Cross multiply
    56,128.24x = 84,195.86 × 18,691.66
  4. Step 4: Simplify right side
    56,128.24x = 1,573,760,400.31
  5. Step 5: Solve for x
    x = 1,573,760,400.31/56,128.24
  6. Step 6: Final answer
    x = 28,038.66

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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.