Home / 80,737.78-121,107.28-30,804.45

Finding the Fourth Proportional to 80,737.78, 121,107.28 and 30,804.45

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Solution

The fourth proportional to 80,737.78, 121,107.28 and 30,804.45 is: 46,206.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,737.78 : 121,107.28 = 30,804.45 : x
  2. Step 2: Convert to fraction form
    80,737.78/121,107.28 = 30,804.45/x
  3. Step 3: Cross multiply
    80,737.78x = 121,107.28 × 30,804.45
  4. Step 4: Simplify right side
    80,737.78x = 3,730,643,377.15
  5. Step 5: Solve for x
    x = 3,730,643,377.15/80,737.78
  6. Step 6: Final answer
    x = 46,206.91

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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.