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Finding the Fourth Proportional to 51,515.84, 77,253.92 and 21,947.84

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Solution

The fourth proportional to 51,515.84, 77,253.92 and 21,947.84 is: 32,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,515.84 : 77,253.92 = 21,947.84 : x
  2. Step 2: Convert to fraction form
    51,515.84/77,253.92 = 21,947.84/x
  3. Step 3: Cross multiply
    51,515.84x = 77,253.92 × 21,947.84
  4. Step 4: Simplify right side
    51,515.84x = 1,695,556,675.53
  5. Step 5: Solve for x
    x = 1,695,556,675.53/51,515.84
  6. Step 6: Final answer
    x = 32,913.31

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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.