Home / 86,989.56-130,286.28-51,856.62

Finding the Fourth Proportional to 86,989.56, 130,286.28 and 51,856.62

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Solution

The fourth proportional to 86,989.56, 130,286.28 and 51,856.62 is: 77,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,989.56 : 130,286.28 = 51,856.62 : x
  2. Step 2: Convert to fraction form
    86,989.56/130,286.28 = 51,856.62/x
  3. Step 3: Cross multiply
    86,989.56x = 130,286.28 × 51,856.62
  4. Step 4: Simplify right side
    86,989.56x = 6,756,206,113.17
  5. Step 5: Solve for x
    x = 6,756,206,113.17/86,989.56
  6. Step 6: Final answer
    x = 77,666.86

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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.