Home / 86,983.56-130,253.81-57,311.46

Finding the Fourth Proportional to 86,983.56, 130,253.81 and 57,311.46

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Solution

The fourth proportional to 86,983.56, 130,253.81 and 57,311.46 is: 85,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,983.56 : 130,253.81 = 57,311.46 : x
  2. Step 2: Convert to fraction form
    86,983.56/130,253.81 = 57,311.46/x
  3. Step 3: Cross multiply
    86,983.56x = 130,253.81 × 57,311.46
  4. Step 4: Simplify right side
    86,983.56x = 7,465,035,735.11
  5. Step 5: Solve for x
    x = 7,465,035,735.11/86,983.56
  6. Step 6: Final answer
    x = 85,821.23

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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.