Home / 86,819.88-130,246.02-39,438.30

Finding the Fourth Proportional to 86,819.88, 130,246.02 and 39,438.30

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Solution

The fourth proportional to 86,819.88, 130,246.02 and 39,438.30 is: 59,164.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,819.88 : 130,246.02 = 39,438.30 : x
  2. Step 2: Convert to fraction form
    86,819.88/130,246.02 = 39,438.30/x
  3. Step 3: Cross multiply
    86,819.88x = 130,246.02 × 39,438.30
  4. Step 4: Simplify right side
    86,819.88x = 5,136,681,610.57
  5. Step 5: Solve for x
    x = 5,136,681,610.57/86,819.88
  6. Step 6: Final answer
    x = 59,164.81

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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.