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Finding the Fourth Proportional to 61,678.51, 85,121.95 and 34,827.61

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Solution

The fourth proportional to 61,678.51, 85,121.95 and 34,827.61 is: 48,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,678.51 : 85,121.95 = 34,827.61 : x
  2. Step 2: Convert to fraction form
    61,678.51/85,121.95 = 34,827.61/x
  3. Step 3: Cross multiply
    61,678.51x = 85,121.95 × 34,827.61
  4. Step 4: Simplify right side
    61,678.51x = 2,964,594,077.04
  5. Step 5: Solve for x
    x = 2,964,594,077.04/61,678.51
  6. Step 6: Final answer
    x = 48,065.27

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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.