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Finding the Fourth Proportional to 55,408.40, 83,123.40 and 22,122.80

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Solution

The fourth proportional to 55,408.40, 83,123.40 and 22,122.80 is: 33,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,408.40 : 83,123.40 = 22,122.80 : x
  2. Step 2: Convert to fraction form
    55,408.40/83,123.40 = 22,122.80/x
  3. Step 3: Cross multiply
    55,408.40x = 83,123.40 × 22,122.80
  4. Step 4: Simplify right side
    55,408.40x = 1,838,922,353.52
  5. Step 5: Solve for x
    x = 1,838,922,353.52/55,408.40
  6. Step 6: Final answer
    x = 33,188.51

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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.