Home / 77,778.15-116,641.26-30,380.94

Finding the Fourth Proportional to 77,778.15, 116,641.26 and 30,380.94

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Solution

The fourth proportional to 77,778.15, 116,641.26 and 30,380.94 is: 45,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.15 : 116,641.26 = 30,380.94 : x
  2. Step 2: Convert to fraction form
    77,778.15/116,641.26 = 30,380.94/x
  3. Step 3: Cross multiply
    77,778.15x = 116,641.26 × 30,380.94
  4. Step 4: Simplify right side
    77,778.15x = 3,543,671,121.58
  5. Step 5: Solve for x
    x = 3,543,671,121.58/77,778.15
  6. Step 6: Final answer
    x = 45,561.27

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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.