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Finding the Fourth Proportional to 85,105.62, 127,658.57 and 35,130.84

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Solution

The fourth proportional to 85,105.62, 127,658.57 and 35,130.84 is: 52,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,105.62 : 127,658.57 = 35,130.84 : x
  2. Step 2: Convert to fraction form
    85,105.62/127,658.57 = 35,130.84/x
  3. Step 3: Cross multiply
    85,105.62x = 127,658.57 × 35,130.84
  4. Step 4: Simplify right side
    85,105.62x = 4,484,752,621.64
  5. Step 5: Solve for x
    x = 4,484,752,621.64/85,105.62
  6. Step 6: Final answer
    x = 52,696.32

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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.