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Finding the Fourth Proportional to 51,955.75, 77,914.47 and 18,666.88

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Solution

The fourth proportional to 51,955.75, 77,914.47 and 18,666.88 is: 27,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,955.75 : 77,914.47 = 18,666.88 : x
  2. Step 2: Convert to fraction form
    51,955.75/77,914.47 = 18,666.88/x
  3. Step 3: Cross multiply
    51,955.75x = 77,914.47 × 18,666.88
  4. Step 4: Simplify right side
    51,955.75x = 1,454,420,061.75
  5. Step 5: Solve for x
    x = 1,454,420,061.75/51,955.75
  6. Step 6: Final answer
    x = 27,993.44

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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.