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Finding the Fourth Proportional to 85,333.88, 128,019.02 and 32,742.92

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Solution

The fourth proportional to 85,333.88, 128,019.02 and 32,742.92 is: 49,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,333.88 : 128,019.02 = 32,742.92 : x
  2. Step 2: Convert to fraction form
    85,333.88/128,019.02 = 32,742.92/x
  3. Step 3: Cross multiply
    85,333.88x = 128,019.02 × 32,742.92
  4. Step 4: Simplify right side
    85,333.88x = 4,191,716,530.34
  5. Step 5: Solve for x
    x = 4,191,716,530.34/85,333.88
  6. Step 6: Final answer
    x = 49,121.36

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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.