Home / 86,697.10-130,019.73-45,121.42

Finding the Fourth Proportional to 86,697.10, 130,019.73 and 45,121.42

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Solution

The fourth proportional to 86,697.10, 130,019.73 and 45,121.42 is: 67,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,697.10 : 130,019.73 = 45,121.42 : x
  2. Step 2: Convert to fraction form
    86,697.10/130,019.73 = 45,121.42/x
  3. Step 3: Cross multiply
    86,697.10x = 130,019.73 × 45,121.42
  4. Step 4: Simplify right side
    86,697.10x = 5,866,674,845.62
  5. Step 5: Solve for x
    x = 5,866,674,845.62/86,697.10
  6. Step 6: Final answer
    x = 67,668.64

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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.