Home / 86,997.31-130,286.56-49,465.57

Finding the Fourth Proportional to 86,997.31, 130,286.56 and 49,465.57

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Solution

The fourth proportional to 86,997.31, 130,286.56 and 49,465.57 is: 74,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,997.31 : 130,286.56 = 49,465.57 : x
  2. Step 2: Convert to fraction form
    86,997.31/130,286.56 = 49,465.57/x
  3. Step 3: Cross multiply
    86,997.31x = 130,286.56 × 49,465.57
  4. Step 4: Simplify right side
    86,997.31x = 6,444,698,953.74
  5. Step 5: Solve for x
    x = 6,444,698,953.74/86,997.31
  6. Step 6: Final answer
    x = 74,079.29

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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.