Home / 30,027.90-45,071-21,761.04

Finding the Fourth Proportional to 30,027.90, 45,071 and 21,761.04

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Solution

The fourth proportional to 30,027.90, 45,071 and 21,761.04 is: 32,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,027.90 : 45,071 = 21,761.04 : x
  2. Step 2: Convert to fraction form
    30,027.90/45,071 = 21,761.04/x
  3. Step 3: Cross multiply
    30,027.90x = 45,071 × 21,761.04
  4. Step 4: Simplify right side
    30,027.90x = 980,791,833.84
  5. Step 5: Solve for x
    x = 980,791,833.84/30,027.90
  6. Step 6: Final answer
    x = 32,662.68

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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.