Home / 55,156.56-82,720.26-15,715.91

Finding the Fourth Proportional to 55,156.56, 82,720.26 and 15,715.91

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Solution

The fourth proportional to 55,156.56, 82,720.26 and 15,715.91 is: 23,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,156.56 : 82,720.26 = 15,715.91 : x
  2. Step 2: Convert to fraction form
    55,156.56/82,720.26 = 15,715.91/x
  3. Step 3: Cross multiply
    55,156.56x = 82,720.26 × 15,715.91
  4. Step 4: Simplify right side
    55,156.56x = 1,300,023,747.74
  5. Step 5: Solve for x
    x = 1,300,023,747.74/55,156.56
  6. Step 6: Final answer
    x = 23,569.70

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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.