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Finding the Fourth Proportional to 61,209.66, 84,447.66 and 40,001.22

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Solution

The fourth proportional to 61,209.66, 84,447.66 and 40,001.22 is: 55,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,209.66 : 84,447.66 = 40,001.22 : x
  2. Step 2: Convert to fraction form
    61,209.66/84,447.66 = 40,001.22/x
  3. Step 3: Cross multiply
    61,209.66x = 84,447.66 × 40,001.22
  4. Step 4: Simplify right side
    61,209.66x = 3,378,009,426.15
  5. Step 5: Solve for x
    x = 3,378,009,426.15/61,209.66
  6. Step 6: Final answer
    x = 55,187.52

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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.