Home / 89,128.20-133,692.30-57,635.40

Finding the Fourth Proportional to 89,128.20, 133,692.30 and 57,635.40

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Solution

The fourth proportional to 89,128.20, 133,692.30 and 57,635.40 is: 86,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,128.20 : 133,692.30 = 57,635.40 : x
  2. Step 2: Convert to fraction form
    89,128.20/133,692.30 = 57,635.40/x
  3. Step 3: Cross multiply
    89,128.20x = 133,692.30 × 57,635.40
  4. Step 4: Simplify right side
    89,128.20x = 7,705,409,187.42
  5. Step 5: Solve for x
    x = 7,705,409,187.42/89,128.20
  6. Step 6: Final answer
    x = 86,453.10

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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.