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Finding the Fourth Proportional to 55,415.70, 83,123.55 and 22,140.90

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Solution

The fourth proportional to 55,415.70, 83,123.55 and 22,140.90 is: 33,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,415.70 : 83,123.55 = 22,140.90 : x
  2. Step 2: Convert to fraction form
    55,415.70/83,123.55 = 22,140.90/x
  3. Step 3: Cross multiply
    55,415.70x = 83,123.55 × 22,140.90
  4. Step 4: Simplify right side
    55,415.70x = 1,840,430,208.20
  5. Step 5: Solve for x
    x = 1,840,430,208.20/55,415.70
  6. Step 6: Final answer
    x = 33,211.35

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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.