Home / 72,888.24-109,359.90-28,546.68

Finding the Fourth Proportional to 72,888.24, 109,359.90 and 28,546.68

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Solution

The fourth proportional to 72,888.24, 109,359.90 and 28,546.68 is: 42,830.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,888.24 : 109,359.90 = 28,546.68 : x
  2. Step 2: Convert to fraction form
    72,888.24/109,359.90 = 28,546.68/x
  3. Step 3: Cross multiply
    72,888.24x = 109,359.90 × 28,546.68
  4. Step 4: Simplify right side
    72,888.24x = 3,121,862,070.13
  5. Step 5: Solve for x
    x = 3,121,862,070.13/72,888.24
  6. Step 6: Final answer
    x = 42,830.81

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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.