Home / 81,335.97-112,237.52-49,501.35

Finding the Fourth Proportional to 81,335.97, 112,237.52 and 49,501.35

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Solution

The fourth proportional to 81,335.97, 112,237.52 and 49,501.35 is: 68,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.97 : 112,237.52 = 49,501.35 : x
  2. Step 2: Convert to fraction form
    81,335.97/112,237.52 = 49,501.35/x
  3. Step 3: Cross multiply
    81,335.97x = 112,237.52 × 49,501.35
  4. Step 4: Simplify right side
    81,335.97x = 5,555,908,513.15
  5. Step 5: Solve for x
    x = 5,555,908,513.15/81,335.97
  6. Step 6: Final answer
    x = 68,308.14

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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.