Home / 77,777.77-116,640.71-30,380.58

Finding the Fourth Proportional to 77,777.77, 116,640.71 and 30,380.58

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Solution

The fourth proportional to 77,777.77, 116,640.71 and 30,380.58 is: 45,560.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,777.77 : 116,640.71 = 30,380.58 : x
  2. Step 2: Convert to fraction form
    77,777.77/116,640.71 = 30,380.58/x
  3. Step 3: Cross multiply
    77,777.77x = 116,640.71 × 30,380.58
  4. Step 4: Simplify right side
    77,777.77x = 3,543,612,421.41
  5. Step 5: Solve for x
    x = 3,543,612,421.41/77,777.77
  6. Step 6: Final answer
    x = 45,560.74

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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.