Home / 80,807.87-121,171.23-47,084.78

Finding the Fourth Proportional to 80,807.87, 121,171.23 and 47,084.78

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Solution

The fourth proportional to 80,807.87, 121,171.23 and 47,084.78 is: 70,603.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,807.87 : 121,171.23 = 47,084.78 : x
  2. Step 2: Convert to fraction form
    80,807.87/121,171.23 = 47,084.78/x
  3. Step 3: Cross multiply
    80,807.87x = 121,171.23 × 47,084.78
  4. Step 4: Simplify right side
    80,807.87x = 5,705,321,009.81
  5. Step 5: Solve for x
    x = 5,705,321,009.81/80,807.87
  6. Step 6: Final answer
    x = 70,603.53

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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.