Home / 89,749.20-134,623.80-54,757.20

Finding the Fourth Proportional to 89,749.20, 134,623.80 and 54,757.20

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Solution

The fourth proportional to 89,749.20, 134,623.80 and 54,757.20 is: 82,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,749.20 : 134,623.80 = 54,757.20 : x
  2. Step 2: Convert to fraction form
    89,749.20/134,623.80 = 54,757.20/x
  3. Step 3: Cross multiply
    89,749.20x = 134,623.80 × 54,757.20
  4. Step 4: Simplify right side
    89,749.20x = 7,371,622,341.36
  5. Step 5: Solve for x
    x = 7,371,622,341.36/89,749.20
  6. Step 6: Final answer
    x = 82,135.80

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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.