Home / 86,783.45-130,186.81-30,610.35

Finding the Fourth Proportional to 86,783.45, 130,186.81 and 30,610.35

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Solution

The fourth proportional to 86,783.45, 130,186.81 and 30,610.35 is: 45,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,783.45 : 130,186.81 = 30,610.35 : x
  2. Step 2: Convert to fraction form
    86,783.45/130,186.81 = 30,610.35/x
  3. Step 3: Cross multiply
    86,783.45x = 130,186.81 × 30,610.35
  4. Step 4: Simplify right side
    86,783.45x = 3,985,063,819.48
  5. Step 5: Solve for x
    x = 3,985,063,819.48/86,783.45
  6. Step 6: Final answer
    x = 45,919.63

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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.