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Finding the Fourth Proportional to 61,374.78, 91,864.17 and 31,751.82

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Solution

The fourth proportional to 61,374.78, 91,864.17 and 31,751.82 is: 47,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,374.78 : 91,864.17 = 31,751.82 : x
  2. Step 2: Convert to fraction form
    61,374.78/91,864.17 = 31,751.82/x
  3. Step 3: Cross multiply
    61,374.78x = 91,864.17 × 31,751.82
  4. Step 4: Simplify right side
    61,374.78x = 2,916,854,590.29
  5. Step 5: Solve for x
    x = 2,916,854,590.29/61,374.78
  6. Step 6: Final answer
    x = 47,525.30

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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.