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Finding the Fourth Proportional to 55,871.94, 83,860.57 and 20,367.59

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Solution

The fourth proportional to 55,871.94, 83,860.57 and 20,367.59 is: 30,570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,871.94 : 83,860.57 = 20,367.59 : x
  2. Step 2: Convert to fraction form
    55,871.94/83,860.57 = 20,367.59/x
  3. Step 3: Cross multiply
    55,871.94x = 83,860.57 × 20,367.59
  4. Step 4: Simplify right side
    55,871.94x = 1,708,037,432.13
  5. Step 5: Solve for x
    x = 1,708,037,432.13/55,871.94
  6. Step 6: Final answer
    x = 30,570.58

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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.