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Finding the Fourth Proportional to 35,242.70, 48,634.70 and 20,139.98

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Solution

The fourth proportional to 35,242.70, 48,634.70 and 20,139.98 is: 27,793.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,242.70 : 48,634.70 = 20,139.98 : x
  2. Step 2: Convert to fraction form
    35,242.70/48,634.70 = 20,139.98/x
  3. Step 3: Cross multiply
    35,242.70x = 48,634.70 × 20,139.98
  4. Step 4: Simplify right side
    35,242.70x = 979,501,541.43
  5. Step 5: Solve for x
    x = 979,501,541.43/35,242.70
  6. Step 6: Final answer
    x = 27,793.04

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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.