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Finding the Fourth Proportional to 61,367.82, 84,645.95 and 39,819.06

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Solution

The fourth proportional to 61,367.82, 84,645.95 and 39,819.06 is: 54,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,367.82 : 84,645.95 = 39,819.06 : x
  2. Step 2: Convert to fraction form
    61,367.82/84,645.95 = 39,819.06/x
  3. Step 3: Cross multiply
    61,367.82x = 84,645.95 × 39,819.06
  4. Step 4: Simplify right side
    61,367.82x = 3,370,521,962.71
  5. Step 5: Solve for x
    x = 3,370,521,962.71/61,367.82
  6. Step 6: Final answer
    x = 54,923.28

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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.