Home / 75,803.76-113,709.48-20,400.24

Finding the Fourth Proportional to 75,803.76, 113,709.48 and 20,400.24

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Solution

The fourth proportional to 75,803.76, 113,709.48 and 20,400.24 is: 30,601.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,803.76 : 113,709.48 = 20,400.24 : x
  2. Step 2: Convert to fraction form
    75,803.76/113,709.48 = 20,400.24/x
  3. Step 3: Cross multiply
    75,803.76x = 113,709.48 × 20,400.24
  4. Step 4: Simplify right side
    75,803.76x = 2,319,700,682.28
  5. Step 5: Solve for x
    x = 2,319,700,682.28/75,803.76
  6. Step 6: Final answer
    x = 30,601.39

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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.