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Finding the Fourth Proportional to 86,120.71, 129,155.95 and 33,517.69

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Solution

The fourth proportional to 86,120.71, 129,155.95 and 33,517.69 is: 50,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.71 : 129,155.95 = 33,517.69 : x
  2. Step 2: Convert to fraction form
    86,120.71/129,155.95 = 33,517.69/x
  3. Step 3: Cross multiply
    86,120.71x = 129,155.95 × 33,517.69
  4. Step 4: Simplify right side
    86,120.71x = 4,329,009,093.76
  5. Step 5: Solve for x
    x = 4,329,009,093.76/86,120.71
  6. Step 6: Final answer
    x = 50,266.76

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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.