Home / 85,215.20-117,591.70-46,972.78

Finding the Fourth Proportional to 85,215.20, 117,591.70 and 46,972.78

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Solution

The fourth proportional to 85,215.20, 117,591.70 and 46,972.78 is: 64,819.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215.20 : 117,591.70 = 46,972.78 : x
  2. Step 2: Convert to fraction form
    85,215.20/117,591.70 = 46,972.78/x
  3. Step 3: Cross multiply
    85,215.20x = 117,591.70 × 46,972.78
  4. Step 4: Simplify right side
    85,215.20x = 5,523,608,642.51
  5. Step 5: Solve for x
    x = 5,523,608,642.51/85,215.20
  6. Step 6: Final answer
    x = 64,819.52

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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.