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Finding the Fourth Proportional to 35,480.70, 48,967.20 and 21,143.70

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Solution

The fourth proportional to 35,480.70, 48,967.20 and 21,143.70 is: 29,180.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,480.70 : 48,967.20 = 21,143.70 : x
  2. Step 2: Convert to fraction form
    35,480.70/48,967.20 = 21,143.70/x
  3. Step 3: Cross multiply
    35,480.70x = 48,967.20 × 21,143.70
  4. Step 4: Simplify right side
    35,480.70x = 1,035,347,786.64
  5. Step 5: Solve for x
    x = 1,035,347,786.64/35,480.70
  6. Step 6: Final answer
    x = 29,180.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.