Home / 91,776.74-137,679.51-39,186.50

Finding the Fourth Proportional to 91,776.74, 137,679.51 and 39,186.50

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Solution

The fourth proportional to 91,776.74, 137,679.51 and 39,186.50 is: 58,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,776.74 : 137,679.51 = 39,186.50 : x
  2. Step 2: Convert to fraction form
    91,776.74/137,679.51 = 39,186.50/x
  3. Step 3: Cross multiply
    91,776.74x = 137,679.51 × 39,186.50
  4. Step 4: Simplify right side
    91,776.74x = 5,395,178,118.62
  5. Step 5: Solve for x
    x = 5,395,178,118.62/91,776.74
  6. Step 6: Final answer
    x = 58,785.90

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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.