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Finding the Fourth Proportional to 61,155, 84,394.05 and 35,678.88

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Solution

The fourth proportional to 61,155, 84,394.05 and 35,678.88 is: 49,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,155 : 84,394.05 = 35,678.88 : x
  2. Step 2: Convert to fraction form
    61,155/84,394.05 = 35,678.88/x
  3. Step 3: Cross multiply
    61,155x = 84,394.05 × 35,678.88
  4. Step 4: Simplify right side
    61,155x = 3,011,085,249.56
  5. Step 5: Solve for x
    x = 3,011,085,249.56/61,155
  6. Step 6: Final answer
    x = 49,236.94

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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.