Home / 51,617.79-77,402.92-20,431.71

Finding the Fourth Proportional to 51,617.79, 77,402.92 and 20,431.71

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Solution

The fourth proportional to 51,617.79, 77,402.92 and 20,431.71 is: 30,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,617.79 : 77,402.92 = 20,431.71 : x
  2. Step 2: Convert to fraction form
    51,617.79/77,402.92 = 20,431.71/x
  3. Step 3: Cross multiply
    51,617.79x = 77,402.92 × 20,431.71
  4. Step 4: Simplify right side
    51,617.79x = 1,581,474,014.59
  5. Step 5: Solve for x
    x = 1,581,474,014.59/51,617.79
  6. Step 6: Final answer
    x = 30,638.16

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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.