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Finding the Fourth Proportional to 85,737.12, 128,550.88 and 35,851.60

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Solution

The fourth proportional to 85,737.12, 128,550.88 and 35,851.60 is: 53,754.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,737.12 : 128,550.88 = 35,851.60 : x
  2. Step 2: Convert to fraction form
    85,737.12/128,550.88 = 35,851.60/x
  3. Step 3: Cross multiply
    85,737.12x = 128,550.88 × 35,851.60
  4. Step 4: Simplify right side
    85,737.12x = 4,608,754,729.41
  5. Step 5: Solve for x
    x = 4,608,754,729.41/85,737.12
  6. Step 6: Final answer
    x = 53,754.48

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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.