Home / 72,420.30-108,660.45-39,101.19

Finding the Fourth Proportional to 72,420.30, 108,660.45 and 39,101.19

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Solution

The fourth proportional to 72,420.30, 108,660.45 and 39,101.19 is: 58,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.30 : 108,660.45 = 39,101.19 : x
  2. Step 2: Convert to fraction form
    72,420.30/108,660.45 = 39,101.19/x
  3. Step 3: Cross multiply
    72,420.30x = 108,660.45 × 39,101.19
  4. Step 4: Simplify right side
    72,420.30x = 4,248,752,900.94
  5. Step 5: Solve for x
    x = 4,248,752,900.94/72,420.30
  6. Step 6: Final answer
    x = 58,667.98

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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.