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Finding the Fourth Proportional to 61,079.77, 84,252.82 and 40,383.19

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Solution

The fourth proportional to 61,079.77, 84,252.82 and 40,383.19 is: 55,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,079.77 : 84,252.82 = 40,383.19 : x
  2. Step 2: Convert to fraction form
    61,079.77/84,252.82 = 40,383.19/x
  3. Step 3: Cross multiply
    61,079.77x = 84,252.82 × 40,383.19
  4. Step 4: Simplify right side
    61,079.77x = 3,402,397,638.10
  5. Step 5: Solve for x
    x = 3,402,397,638.10/61,079.77
  6. Step 6: Final answer
    x = 55,704.17

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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.