Home / 85,769.01-128,647.35-26,603.15

Finding the Fourth Proportional to 85,769.01, 128,647.35 and 26,603.15

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Solution

The fourth proportional to 85,769.01, 128,647.35 and 26,603.15 is: 39,902.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,769.01 : 128,647.35 = 26,603.15 : x
  2. Step 2: Convert to fraction form
    85,769.01/128,647.35 = 26,603.15/x
  3. Step 3: Cross multiply
    85,769.01x = 128,647.35 × 26,603.15
  4. Step 4: Simplify right side
    85,769.01x = 3,422,424,105.92
  5. Step 5: Solve for x
    x = 3,422,424,105.92/85,769.01
  6. Step 6: Final answer
    x = 39,902.81

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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.