Home / 51,189.30-70,640.51-28,529.15

Finding the Fourth Proportional to 51,189.30, 70,640.51 and 28,529.15

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Solution

The fourth proportional to 51,189.30, 70,640.51 and 28,529.15 is: 39,369.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,189.30 : 70,640.51 = 28,529.15 : x
  2. Step 2: Convert to fraction form
    51,189.30/70,640.51 = 28,529.15/x
  3. Step 3: Cross multiply
    51,189.30x = 70,640.51 × 28,529.15
  4. Step 4: Simplify right side
    51,189.30x = 2,015,313,210.02
  5. Step 5: Solve for x
    x = 2,015,313,210.02/51,189.30
  6. Step 6: Final answer
    x = 39,369.81

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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.