Home / 84,043.20-115,819.98-60,128.40

Finding the Fourth Proportional to 84,043.20, 115,819.98 and 60,128.40

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Solution

The fourth proportional to 84,043.20, 115,819.98 and 60,128.40 is: 82,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043.20 : 115,819.98 = 60,128.40 : x
  2. Step 2: Convert to fraction form
    84,043.20/115,819.98 = 60,128.40/x
  3. Step 3: Cross multiply
    84,043.20x = 115,819.98 × 60,128.40
  4. Step 4: Simplify right side
    84,043.20x = 6,964,070,085.43
  5. Step 5: Solve for x
    x = 6,964,070,085.43/84,043.20
  6. Step 6: Final answer
    x = 82,862.98

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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.