Home / 51,720.24-71,378.08-30,216.90

Finding the Fourth Proportional to 51,720.24, 71,378.08 and 30,216.90

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Solution

The fourth proportional to 51,720.24, 71,378.08 and 30,216.90 is: 41,701.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,720.24 : 71,378.08 = 30,216.90 : x
  2. Step 2: Convert to fraction form
    51,720.24/71,378.08 = 30,216.90/x
  3. Step 3: Cross multiply
    51,720.24x = 71,378.08 × 30,216.90
  4. Step 4: Simplify right side
    51,720.24x = 2,156,824,305.55
  5. Step 5: Solve for x
    x = 2,156,824,305.55/51,720.24
  6. Step 6: Final answer
    x = 41,701.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.