Home / 80,688.87-111,342.84-46,690.58

Finding the Fourth Proportional to 80,688.87, 111,342.84 and 46,690.58

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Solution

The fourth proportional to 80,688.87, 111,342.84 and 46,690.58 is: 64,428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,688.87 : 111,342.84 = 46,690.58 : x
  2. Step 2: Convert to fraction form
    80,688.87/111,342.84 = 46,690.58/x
  3. Step 3: Cross multiply
    80,688.87x = 111,342.84 × 46,690.58
  4. Step 4: Simplify right side
    80,688.87x = 5,198,661,778.45
  5. Step 5: Solve for x
    x = 5,198,661,778.45/80,688.87
  6. Step 6: Final answer
    x = 64,428.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.