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Finding the Fourth Proportional to 85,992.39, 129,039.34 and 32,729.22

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Solution

The fourth proportional to 85,992.39, 129,039.34 and 32,729.22 is: 49,113.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.39 : 129,039.34 = 32,729.22 : x
  2. Step 2: Convert to fraction form
    85,992.39/129,039.34 = 32,729.22/x
  3. Step 3: Cross multiply
    85,992.39x = 129,039.34 × 32,729.22
  4. Step 4: Simplify right side
    85,992.39x = 4,223,356,947.51
  5. Step 5: Solve for x
    x = 4,223,356,947.51/85,992.39
  6. Step 6: Final answer
    x = 49,113.15

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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.