Home / 85,728.41-128,601.08-29,561.13

Finding the Fourth Proportional to 85,728.41, 128,601.08 and 29,561.13

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Solution

The fourth proportional to 85,728.41, 128,601.08 and 29,561.13 is: 44,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,728.41 : 128,601.08 = 29,561.13 : x
  2. Step 2: Convert to fraction form
    85,728.41/128,601.08 = 29,561.13/x
  3. Step 3: Cross multiply
    85,728.41x = 128,601.08 × 29,561.13
  4. Step 4: Simplify right side
    85,728.41x = 3,801,593,244.02
  5. Step 5: Solve for x
    x = 3,801,593,244.02/85,728.41
  6. Step 6: Final answer
    x = 44,344.61

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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.