Home / 103,573.15-155,379.77-40,390.72

Finding the Fourth Proportional to 103,573.15, 155,379.77 and 40,390.72

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Solution

The fourth proportional to 103,573.15, 155,379.77 and 40,390.72 is: 60,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,573.15 : 155,379.77 = 40,390.72 : x
  2. Step 2: Convert to fraction form
    103,573.15/155,379.77 = 40,390.72/x
  3. Step 3: Cross multiply
    103,573.15x = 155,379.77 × 40,390.72
  4. Step 4: Simplify right side
    103,573.15x = 6,275,900,344.80
  5. Step 5: Solve for x
    x = 6,275,900,344.80/103,573.15
  6. Step 6: Final answer
    x = 60,593.89

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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.