Home / 89,111.20-133,666.80-54,032.80

Finding the Fourth Proportional to 89,111.20, 133,666.80 and 54,032.80

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Solution

The fourth proportional to 89,111.20, 133,666.80 and 54,032.80 is: 81,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,111.20 : 133,666.80 = 54,032.80 : x
  2. Step 2: Convert to fraction form
    89,111.20/133,666.80 = 54,032.80/x
  3. Step 3: Cross multiply
    89,111.20x = 133,666.80 × 54,032.80
  4. Step 4: Simplify right side
    89,111.20x = 7,222,391,471.04
  5. Step 5: Solve for x
    x = 7,222,391,471.04/89,111.20
  6. Step 6: Final answer
    x = 81,049.20

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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.