Home / 80,806.36-121,168.98-47,083.28

Finding the Fourth Proportional to 80,806.36, 121,168.98 and 47,083.28

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Solution

The fourth proportional to 80,806.36, 121,168.98 and 47,083.28 is: 70,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,806.36 : 121,168.98 = 47,083.28 : x
  2. Step 2: Convert to fraction form
    80,806.36/121,168.98 = 47,083.28/x
  3. Step 3: Cross multiply
    80,806.36x = 121,168.98 × 47,083.28
  4. Step 4: Simplify right side
    80,806.36x = 5,705,032,406.81
  5. Step 5: Solve for x
    x = 5,705,032,406.81/80,806.36
  6. Step 6: Final answer
    x = 70,601.28

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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.