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Finding the Fourth Proportional to 61,107.90, 84,332.79 and 39,944.22

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Solution

The fourth proportional to 61,107.90, 84,332.79 and 39,944.22 is: 55,125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.90 : 84,332.79 = 39,944.22 : x
  2. Step 2: Convert to fraction form
    61,107.90/84,332.79 = 39,944.22/x
  3. Step 3: Cross multiply
    61,107.90x = 84,332.79 × 39,944.22
  4. Step 4: Simplify right side
    61,107.90x = 3,368,607,516.97
  5. Step 5: Solve for x
    x = 3,368,607,516.97/61,107.90
  6. Step 6: Final answer
    x = 55,125.57

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1.5x scale

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.