Home / 85,419.14-128,132.09-32,105.75

Finding the Fourth Proportional to 85,419.14, 128,132.09 and 32,105.75

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Solution

The fourth proportional to 85,419.14, 128,132.09 and 32,105.75 is: 48,159.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,419.14 : 128,132.09 = 32,105.75 : x
  2. Step 2: Convert to fraction form
    85,419.14/128,132.09 = 32,105.75/x
  3. Step 3: Cross multiply
    85,419.14x = 128,132.09 × 32,105.75
  4. Step 4: Simplify right side
    85,419.14x = 4,113,776,047.33
  5. Step 5: Solve for x
    x = 4,113,776,047.33/85,419.14
  6. Step 6: Final answer
    x = 48,159.89

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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.