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Finding the Fourth Proportional to 51,799.66, 77,687.97 and 20,210.56

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Solution

The fourth proportional to 51,799.66, 77,687.97 and 20,210.56 is: 30,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,799.66 : 77,687.97 = 20,210.56 : x
  2. Step 2: Convert to fraction form
    51,799.66/77,687.97 = 20,210.56/x
  3. Step 3: Cross multiply
    51,799.66x = 77,687.97 × 20,210.56
  4. Step 4: Simplify right side
    51,799.66x = 1,570,117,378.96
  5. Step 5: Solve for x
    x = 1,570,117,378.96/51,799.66
  6. Step 6: Final answer
    x = 30,311.35

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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.