Home / 57,990.89-87,000.18-20,554.23

Finding the Fourth Proportional to 57,990.89, 87,000.18 and 20,554.23

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Solution

The fourth proportional to 57,990.89, 87,000.18 and 20,554.23 is: 30,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,990.89 : 87,000.18 = 20,554.23 : x
  2. Step 2: Convert to fraction form
    57,990.89/87,000.18 = 20,554.23/x
  3. Step 3: Cross multiply
    57,990.89x = 87,000.18 × 20,554.23
  4. Step 4: Simplify right side
    57,990.89x = 1,788,221,606.99
  5. Step 5: Solve for x
    x = 1,788,221,606.99/57,990.89
  6. Step 6: Final answer
    x = 30,836.25

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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.