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Finding the Fourth Proportional to 61,207.76, 84,489 and 36,078.32

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Solution

The fourth proportional to 61,207.76, 84,489 and 36,078.32 is: 49,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.76 : 84,489 = 36,078.32 : x
  2. Step 2: Convert to fraction form
    61,207.76/84,489 = 36,078.32/x
  3. Step 3: Cross multiply
    61,207.76x = 84,489 × 36,078.32
  4. Step 4: Simplify right side
    61,207.76x = 3,048,221,178.48
  5. Step 5: Solve for x
    x = 3,048,221,178.48/61,207.76
  6. Step 6: Final answer
    x = 49,801.22

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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.