Home / 51,139.77-76,720.05-21,557.55

Finding the Fourth Proportional to 51,139.77, 76,720.05 and 21,557.55

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Solution

The fourth proportional to 51,139.77, 76,720.05 and 21,557.55 is: 32,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,139.77 : 76,720.05 = 21,557.55 : x
  2. Step 2: Convert to fraction form
    51,139.77/76,720.05 = 21,557.55/x
  3. Step 3: Cross multiply
    51,139.77x = 76,720.05 × 21,557.55
  4. Step 4: Simplify right side
    51,139.77x = 1,653,896,313.88
  5. Step 5: Solve for x
    x = 1,653,896,313.88/51,139.77
  6. Step 6: Final answer
    x = 32,340.71

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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.