Home / 72,555.45-108,768.24-28,171.65

Finding the Fourth Proportional to 72,555.45, 108,768.24 and 28,171.65

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Solution

The fourth proportional to 72,555.45, 108,768.24 and 28,171.65 is: 42,232.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555.45 : 108,768.24 = 28,171.65 : x
  2. Step 2: Convert to fraction form
    72,555.45/108,768.24 = 28,171.65/x
  3. Step 3: Cross multiply
    72,555.45x = 108,768.24 × 28,171.65
  4. Step 4: Simplify right side
    72,555.45x = 3,064,180,663.69
  5. Step 5: Solve for x
    x = 3,064,180,663.69/72,555.45
  6. Step 6: Final answer
    x = 42,232.26

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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.