Home / 80,293.40-120,443.34-21,135.04

Finding the Fourth Proportional to 80,293.40, 120,443.34 and 21,135.04

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Solution

The fourth proportional to 80,293.40, 120,443.34 and 21,135.04 is: 31,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,293.40 : 120,443.34 = 21,135.04 : x
  2. Step 2: Convert to fraction form
    80,293.40/120,443.34 = 21,135.04/x
  3. Step 3: Cross multiply
    80,293.40x = 120,443.34 × 21,135.04
  4. Step 4: Simplify right side
    80,293.40x = 2,545,574,808.63
  5. Step 5: Solve for x
    x = 2,545,574,808.63/80,293.40
  6. Step 6: Final answer
    x = 31,703.41

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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.