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Finding the Fourth Proportional to 55,239.66, 82,870.32 and 21,953.52

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Solution

The fourth proportional to 55,239.66, 82,870.32 and 21,953.52 is: 32,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,239.66 : 82,870.32 = 21,953.52 : x
  2. Step 2: Convert to fraction form
    55,239.66/82,870.32 = 21,953.52/x
  3. Step 3: Cross multiply
    55,239.66x = 82,870.32 × 21,953.52
  4. Step 4: Simplify right side
    55,239.66x = 1,819,295,227.53
  5. Step 5: Solve for x
    x = 1,819,295,227.53/55,239.66
  6. Step 6: Final answer
    x = 32,934.58

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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.