Home / 83,739.72-115,445.34-66,801.45

Finding the Fourth Proportional to 83,739.72, 115,445.34 and 66,801.45

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Solution

The fourth proportional to 83,739.72, 115,445.34 and 66,801.45 is: 92,093.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,739.72 : 115,445.34 = 66,801.45 : x
  2. Step 2: Convert to fraction form
    83,739.72/115,445.34 = 66,801.45/x
  3. Step 3: Cross multiply
    83,739.72x = 115,445.34 × 66,801.45
  4. Step 4: Simplify right side
    83,739.72x = 7,711,916,107.74
  5. Step 5: Solve for x
    x = 7,711,916,107.74/83,739.72
  6. Step 6: Final answer
    x = 92,093.88

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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.