Home / 57,931.20-86,900.76-18,491.30

Finding the Fourth Proportional to 57,931.20, 86,900.76 and 18,491.30

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Solution

The fourth proportional to 57,931.20, 86,900.76 and 18,491.30 is: 27,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,931.20 : 86,900.76 = 18,491.30 : x
  2. Step 2: Convert to fraction form
    57,931.20/86,900.76 = 18,491.30/x
  3. Step 3: Cross multiply
    57,931.20x = 86,900.76 × 18,491.30
  4. Step 4: Simplify right side
    57,931.20x = 1,606,908,023.39
  5. Step 5: Solve for x
    x = 1,606,908,023.39/57,931.20
  6. Step 6: Final answer
    x = 27,738.21

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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.