Home / 85,513.12-128,288.61-29,351.97

Finding the Fourth Proportional to 85,513.12, 128,288.61 and 29,351.97

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Solution

The fourth proportional to 85,513.12, 128,288.61 and 29,351.97 is: 44,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,513.12 : 128,288.61 = 29,351.97 : x
  2. Step 2: Convert to fraction form
    85,513.12/128,288.61 = 29,351.97/x
  3. Step 3: Cross multiply
    85,513.12x = 128,288.61 × 29,351.97
  4. Step 4: Simplify right side
    85,513.12x = 3,765,523,432.06
  5. Step 5: Solve for x
    x = 3,765,523,432.06/85,513.12
  6. Step 6: Final answer
    x = 44,034.45

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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.