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Finding the Fourth Proportional to 61,230.48, 84,488 and 36,076.56

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Solution

The fourth proportional to 61,230.48, 84,488 and 36,076.56 is: 49,779.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,230.48 : 84,488 = 36,076.56 : x
  2. Step 2: Convert to fraction form
    61,230.48/84,488 = 36,076.56/x
  3. Step 3: Cross multiply
    61,230.48x = 84,488 × 36,076.56
  4. Step 4: Simplify right side
    61,230.48x = 3,048,036,401.28
  5. Step 5: Solve for x
    x = 3,048,036,401.28/61,230.48
  6. Step 6: Final answer
    x = 49,779.72

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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.