Home / 80,890.07-121,389.77-28,300.01

Finding the Fourth Proportional to 80,890.07, 121,389.77 and 28,300.01

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Solution

The fourth proportional to 80,890.07, 121,389.77 and 28,300.01 is: 42,469.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.07 : 121,389.77 = 28,300.01 : x
  2. Step 2: Convert to fraction form
    80,890.07/121,389.77 = 28,300.01/x
  3. Step 3: Cross multiply
    80,890.07x = 121,389.77 × 28,300.01
  4. Step 4: Simplify right side
    80,890.07x = 3,435,331,168.70
  5. Step 5: Solve for x
    x = 3,435,331,168.70/80,890.07
  6. Step 6: Final answer
    x = 42,469.14

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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.