Home / 56,731.78-78,289.83-31,587.22

Finding the Fourth Proportional to 56,731.78, 78,289.83 and 31,587.22

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Solution

The fourth proportional to 56,731.78, 78,289.83 and 31,587.22 is: 43,590.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.78 : 78,289.83 = 31,587.22 : x
  2. Step 2: Convert to fraction form
    56,731.78/78,289.83 = 31,587.22/x
  3. Step 3: Cross multiply
    56,731.78x = 78,289.83 × 31,587.22
  4. Step 4: Simplify right side
    56,731.78x = 2,472,958,083.97
  5. Step 5: Solve for x
    x = 2,472,958,083.97/56,731.78
  6. Step 6: Final answer
    x = 43,590.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.