Home / 72,077.64-108,122.04-19,487.40

Finding the Fourth Proportional to 72,077.64, 108,122.04 and 19,487.40

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Solution

The fourth proportional to 72,077.64, 108,122.04 and 19,487.40 is: 29,232.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,077.64 : 108,122.04 = 19,487.40 : x
  2. Step 2: Convert to fraction form
    72,077.64/108,122.04 = 19,487.40/x
  3. Step 3: Cross multiply
    72,077.64x = 108,122.04 × 19,487.40
  4. Step 4: Simplify right side
    72,077.64x = 2,107,017,442.30
  5. Step 5: Solve for x
    x = 2,107,017,442.30/72,077.64
  6. Step 6: Final answer
    x = 29,232.61

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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.