Home / 86,731.12-119,685.90-49,004.56

Finding the Fourth Proportional to 86,731.12, 119,685.90 and 49,004.56

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Solution

The fourth proportional to 86,731.12, 119,685.90 and 49,004.56 is: 67,624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,731.12 : 119,685.90 = 49,004.56 : x
  2. Step 2: Convert to fraction form
    86,731.12/119,685.90 = 49,004.56/x
  3. Step 3: Cross multiply
    86,731.12x = 119,685.90 × 49,004.56
  4. Step 4: Simplify right side
    86,731.12x = 5,865,154,867.70
  5. Step 5: Solve for x
    x = 5,865,154,867.70/86,731.12
  6. Step 6: Final answer
    x = 67,624.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.