Home / 56,691.36-85,048.56-19,781.28

Finding the Fourth Proportional to 56,691.36, 85,048.56 and 19,781.28

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Solution

The fourth proportional to 56,691.36, 85,048.56 and 19,781.28 is: 29,675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.36 : 85,048.56 = 19,781.28 : x
  2. Step 2: Convert to fraction form
    56,691.36/85,048.56 = 19,781.28/x
  3. Step 3: Cross multiply
    56,691.36x = 85,048.56 × 19,781.28
  4. Step 4: Simplify right side
    56,691.36x = 1,682,369,378.96
  5. Step 5: Solve for x
    x = 1,682,369,378.96/56,691.36
  6. Step 6: Final answer
    x = 29,675.94

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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.