Home / 81,640.90-112,669.48-54,370.23

Finding the Fourth Proportional to 81,640.90, 112,669.48 and 54,370.23

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Solution

The fourth proportional to 81,640.90, 112,669.48 and 54,370.23 is: 75,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.90 : 112,669.48 = 54,370.23 : x
  2. Step 2: Convert to fraction form
    81,640.90/112,669.48 = 54,370.23/x
  3. Step 3: Cross multiply
    81,640.90x = 112,669.48 × 54,370.23
  4. Step 4: Simplify right side
    81,640.90x = 6,125,865,541.58
  5. Step 5: Solve for x
    x = 6,125,865,541.58/81,640.90
  6. Step 6: Final answer
    x = 75,034.27

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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.