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Finding the Fourth Proportional to 85,600.80, 128,331.56 and 35,718.05

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Solution

The fourth proportional to 85,600.80, 128,331.56 and 35,718.05 is: 53,548.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,600.80 : 128,331.56 = 35,718.05 : x
  2. Step 2: Convert to fraction form
    85,600.80/128,331.56 = 35,718.05/x
  3. Step 3: Cross multiply
    85,600.80x = 128,331.56 × 35,718.05
  4. Step 4: Simplify right side
    85,600.80x = 4,583,753,486.78
  5. Step 5: Solve for x
    x = 4,583,753,486.78/85,600.80
  6. Step 6: Final answer
    x = 53,548.02

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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.