Home / 72,579.11-108,840.67-28,200.02

Finding the Fourth Proportional to 72,579.11, 108,840.67 and 28,200.02

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Solution

The fourth proportional to 72,579.11, 108,840.67 and 28,200.02 is: 42,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579.11 : 108,840.67 = 28,200.02 : x
  2. Step 2: Convert to fraction form
    72,579.11/108,840.67 = 28,200.02/x
  3. Step 3: Cross multiply
    72,579.11x = 108,840.67 × 28,200.02
  4. Step 4: Simplify right side
    72,579.11x = 3,069,308,456.11
  5. Step 5: Solve for x
    x = 3,069,308,456.11/72,579.11
  6. Step 6: Final answer
    x = 42,289.15

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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.