Home / 103,780.36-155,669.82-40,606.84

Finding the Fourth Proportional to 103,780.36, 155,669.82 and 40,606.84

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Solution

The fourth proportional to 103,780.36, 155,669.82 and 40,606.84 is: 60,909.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.36 : 155,669.82 = 40,606.84 : x
  2. Step 2: Convert to fraction form
    103,780.36/155,669.82 = 40,606.84/x
  3. Step 3: Cross multiply
    103,780.36x = 155,669.82 × 40,606.84
  4. Step 4: Simplify right side
    103,780.36x = 6,321,259,473.57
  5. Step 5: Solve for x
    x = 6,321,259,473.57/103,780.36
  6. Step 6: Final answer
    x = 60,909.98

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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.