Home / 80,803.36-121,255.52-30,887.68

Finding the Fourth Proportional to 80,803.36, 121,255.52 and 30,887.68

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Solution

The fourth proportional to 80,803.36, 121,255.52 and 30,887.68 is: 46,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.36 : 121,255.52 = 30,887.68 : x
  2. Step 2: Convert to fraction form
    80,803.36/121,255.52 = 30,887.68/x
  3. Step 3: Cross multiply
    80,803.36x = 121,255.52 × 30,887.68
  4. Step 4: Simplify right side
    80,803.36x = 3,745,301,699.99
  5. Step 5: Solve for x
    x = 3,745,301,699.99/80,803.36
  6. Step 6: Final answer
    x = 46,350.82

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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.