Home / 86,782.95-130,186.06-30,609.85

Finding the Fourth Proportional to 86,782.95, 130,186.06 and 30,609.85

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Solution

The fourth proportional to 86,782.95, 130,186.06 and 30,609.85 is: 45,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,782.95 : 130,186.06 = 30,609.85 : x
  2. Step 2: Convert to fraction form
    86,782.95/130,186.06 = 30,609.85/x
  3. Step 3: Cross multiply
    86,782.95x = 130,186.06 × 30,609.85
  4. Step 4: Simplify right side
    86,782.95x = 3,984,975,768.69
  5. Step 5: Solve for x
    x = 3,984,975,768.69/86,782.95
  6. Step 6: Final answer
    x = 45,918.88

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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.