Home / 99,623.28-149,390.92-28,529.80

Finding the Fourth Proportional to 99,623.28, 149,390.92 and 28,529.80

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Solution

The fourth proportional to 99,623.28, 149,390.92 and 28,529.80 is: 42,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,623.28 : 149,390.92 = 28,529.80 : x
  2. Step 2: Convert to fraction form
    99,623.28/149,390.92 = 28,529.80/x
  3. Step 3: Cross multiply
    99,623.28x = 149,390.92 × 28,529.80
  4. Step 4: Simplify right side
    99,623.28x = 4,262,093,411.44
  5. Step 5: Solve for x
    x = 4,262,093,411.44/99,623.28
  6. Step 6: Final answer
    x = 42,782.10

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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.