Home / 57,936.40-86,888.90-20,491.52

Finding the Fourth Proportional to 57,936.40, 86,888.90 and 20,491.52

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Solution

The fourth proportional to 57,936.40, 86,888.90 and 20,491.52 is: 30,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,936.40 : 86,888.90 = 20,491.52 : x
  2. Step 2: Convert to fraction form
    57,936.40/86,888.90 = 20,491.52/x
  3. Step 3: Cross multiply
    57,936.40x = 86,888.90 × 20,491.52
  4. Step 4: Simplify right side
    57,936.40x = 1,780,485,248.91
  5. Step 5: Solve for x
    x = 1,780,485,248.91/57,936.40
  6. Step 6: Final answer
    x = 30,731.72

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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.