Home / 86,929.20-130,345.20-40,124.16

Finding the Fourth Proportional to 86,929.20, 130,345.20 and 40,124.16

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Solution

The fourth proportional to 86,929.20, 130,345.20 and 40,124.16 is: 60,163.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.20 : 130,345.20 = 40,124.16 : x
  2. Step 2: Convert to fraction form
    86,929.20/130,345.20 = 40,124.16/x
  3. Step 3: Cross multiply
    86,929.20x = 130,345.20 × 40,124.16
  4. Step 4: Simplify right side
    86,929.20x = 5,229,991,660.03
  5. Step 5: Solve for x
    x = 5,229,991,660.03/86,929.20
  6. Step 6: Final answer
    x = 60,163.81

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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.