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Finding the Fourth Proportional to 55,200.67, 82,814.78 and 21,909.71

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Solution

The fourth proportional to 55,200.67, 82,814.78 and 21,909.71 is: 32,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,200.67 : 82,814.78 = 21,909.71 : x
  2. Step 2: Convert to fraction form
    55,200.67/82,814.78 = 21,909.71/x
  3. Step 3: Cross multiply
    55,200.67x = 82,814.78 × 21,909.71
  4. Step 4: Simplify right side
    55,200.67x = 1,814,448,075.33
  5. Step 5: Solve for x
    x = 1,814,448,075.33/55,200.67
  6. Step 6: Final answer
    x = 32,870.04

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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.