Home / 86,806.20-130,215.06-31,395

Finding the Fourth Proportional to 86,806.20, 130,215.06 and 31,395

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Solution

The fourth proportional to 86,806.20, 130,215.06 and 31,395 is: 47,094.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,806.20 : 130,215.06 = 31,395 : x
  2. Step 2: Convert to fraction form
    86,806.20/130,215.06 = 31,395/x
  3. Step 3: Cross multiply
    86,806.20x = 130,215.06 × 31,395
  4. Step 4: Simplify right side
    86,806.20x = 4,088,101,808.70
  5. Step 5: Solve for x
    x = 4,088,101,808.70/86,806.20
  6. Step 6: Final answer
    x = 47,094.58

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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.