Home / 81,042.31-111,872.51-49,221.46

Finding the Fourth Proportional to 81,042.31, 111,872.51 and 49,221.46

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Solution

The fourth proportional to 81,042.31, 111,872.51 and 49,221.46 is: 67,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.31 : 111,872.51 = 49,221.46 : x
  2. Step 2: Convert to fraction form
    81,042.31/111,872.51 = 49,221.46/x
  3. Step 3: Cross multiply
    81,042.31x = 111,872.51 × 49,221.46
  4. Step 4: Simplify right side
    81,042.31x = 5,506,528,276.06
  5. Step 5: Solve for x
    x = 5,506,528,276.06/81,042.31
  6. Step 6: Final answer
    x = 67,946.34

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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.