Home / 86,679.08-130,018.62-30,505.96

Finding the Fourth Proportional to 86,679.08, 130,018.62 and 30,505.96

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Solution

The fourth proportional to 86,679.08, 130,018.62 and 30,505.96 is: 45,758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,679.08 : 130,018.62 = 30,505.96 : x
  2. Step 2: Convert to fraction form
    86,679.08/130,018.62 = 30,505.96/x
  3. Step 3: Cross multiply
    86,679.08x = 130,018.62 × 30,505.96
  4. Step 4: Simplify right side
    86,679.08x = 3,966,342,820.98
  5. Step 5: Solve for x
    x = 3,966,342,820.98/86,679.08
  6. Step 6: Final answer
    x = 45,758.94

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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.