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Finding the Fourth Proportional to 61,871.88, 85,382.28 and 35,019.48

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Solution

The fourth proportional to 61,871.88, 85,382.28 and 35,019.48 is: 48,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,871.88 : 85,382.28 = 35,019.48 : x
  2. Step 2: Convert to fraction form
    61,871.88/85,382.28 = 35,019.48/x
  3. Step 3: Cross multiply
    61,871.88x = 85,382.28 × 35,019.48
  4. Step 4: Simplify right side
    61,871.88x = 2,990,043,046.81
  5. Step 5: Solve for x
    x = 2,990,043,046.81/61,871.88
  6. Step 6: Final answer
    x = 48,326.36

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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.