Home / 72,230.76-99,679.14-40,401.36

Finding the Fourth Proportional to 72,230.76, 99,679.14 and 40,401.36

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Solution

The fourth proportional to 72,230.76, 99,679.14 and 40,401.36 is: 55,754.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,230.76 : 99,679.14 = 40,401.36 : x
  2. Step 2: Convert to fraction form
    72,230.76/99,679.14 = 40,401.36/x
  3. Step 3: Cross multiply
    72,230.76x = 99,679.14 × 40,401.36
  4. Step 4: Simplify right side
    72,230.76x = 4,027,172,819.63
  5. Step 5: Solve for x
    x = 4,027,172,819.63/72,230.76
  6. Step 6: Final answer
    x = 55,754.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.