Home / 86,808.20-130,218.06-31,397

Finding the Fourth Proportional to 86,808.20, 130,218.06 and 31,397

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Solution

The fourth proportional to 86,808.20, 130,218.06 and 31,397 is: 47,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,808.20 : 130,218.06 = 31,397 : x
  2. Step 2: Convert to fraction form
    86,808.20/130,218.06 = 31,397/x
  3. Step 3: Cross multiply
    86,808.20x = 130,218.06 × 31,397
  4. Step 4: Simplify right side
    86,808.20x = 4,088,456,429.82
  5. Step 5: Solve for x
    x = 4,088,456,429.82/86,808.20
  6. Step 6: Final answer
    x = 47,097.58

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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.