Home / 51,945.43-77,931.11-20,779.87

Finding the Fourth Proportional to 51,945.43, 77,931.11 and 20,779.87

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Solution

The fourth proportional to 51,945.43, 77,931.11 and 20,779.87 is: 31,174.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,945.43 : 77,931.11 = 20,779.87 : x
  2. Step 2: Convert to fraction form
    51,945.43/77,931.11 = 20,779.87/x
  3. Step 3: Cross multiply
    51,945.43x = 77,931.11 × 20,779.87
  4. Step 4: Simplify right side
    51,945.43x = 1,619,398,334.76
  5. Step 5: Solve for x
    x = 1,619,398,334.76/51,945.43
  6. Step 6: Final answer
    x = 31,174.99

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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.