Home / 85,839.22-128,815.97-35,279.71

Finding the Fourth Proportional to 85,839.22, 128,815.97 and 35,279.71

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Solution

The fourth proportional to 85,839.22, 128,815.97 and 35,279.71 is: 52,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,839.22 : 128,815.97 = 35,279.71 : x
  2. Step 2: Convert to fraction form
    85,839.22/128,815.97 = 35,279.71/x
  3. Step 3: Cross multiply
    85,839.22x = 128,815.97 × 35,279.71
  4. Step 4: Simplify right side
    85,839.22x = 4,544,590,210.61
  5. Step 5: Solve for x
    x = 4,544,590,210.61/85,839.22
  6. Step 6: Final answer
    x = 52,943.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.