Home / 72,702.21-109,008.67-28,277.19

Finding the Fourth Proportional to 72,702.21, 109,008.67 and 28,277.19

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Solution

The fourth proportional to 72,702.21, 109,008.67 and 28,277.19 is: 42,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,702.21 : 109,008.67 = 28,277.19 : x
  2. Step 2: Convert to fraction form
    72,702.21/109,008.67 = 28,277.19/x
  3. Step 3: Cross multiply
    72,702.21x = 109,008.67 × 28,277.19
  4. Step 4: Simplify right side
    72,702.21x = 3,082,458,873.24
  5. Step 5: Solve for x
    x = 3,082,458,873.24/72,702.21
  6. Step 6: Final answer
    x = 42,398.42

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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.