Home / 85,535.14-128,269.90-29,364.78

Finding the Fourth Proportional to 85,535.14, 128,269.90 and 29,364.78

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Solution

The fourth proportional to 85,535.14, 128,269.90 and 29,364.78 is: 44,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.14 : 128,269.90 = 29,364.78 : x
  2. Step 2: Convert to fraction form
    85,535.14/128,269.90 = 29,364.78/x
  3. Step 3: Cross multiply
    85,535.14x = 128,269.90 × 29,364.78
  4. Step 4: Simplify right side
    85,535.14x = 3,766,617,394.12
  5. Step 5: Solve for x
    x = 3,766,617,394.12/85,535.14
  6. Step 6: Final answer
    x = 44,035.91

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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.