Home / 61,112.97-84,209.49-49,128.21

Finding the Fourth Proportional to 61,112.97, 84,209.49 and 49,128.21

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Solution

The fourth proportional to 61,112.97, 84,209.49 and 49,128.21 is: 67,695.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,112.97 : 84,209.49 = 49,128.21 : x
  2. Step 2: Convert to fraction form
    61,112.97/84,209.49 = 49,128.21/x
  3. Step 3: Cross multiply
    61,112.97x = 84,209.49 × 49,128.21
  4. Step 4: Simplify right side
    61,112.97x = 4,137,061,508.71
  5. Step 5: Solve for x
    x = 4,137,061,508.71/61,112.97
  6. Step 6: Final answer
    x = 67,695.31

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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.