Home / 97,821.20-146,780.40-38,658.80

Finding the Fourth Proportional to 97,821.20, 146,780.40 and 38,658.80

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Solution

The fourth proportional to 97,821.20, 146,780.40 and 38,658.80 is: 58,007.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,821.20 : 146,780.40 = 38,658.80 : x
  2. Step 2: Convert to fraction form
    97,821.20/146,780.40 = 38,658.80/x
  3. Step 3: Cross multiply
    97,821.20x = 146,780.40 × 38,658.80
  4. Step 4: Simplify right side
    97,821.20x = 5,674,354,127.52
  5. Step 5: Solve for x
    x = 5,674,354,127.52/97,821.20
  6. Step 6: Final answer
    x = 58,007.41

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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.