Home / 86,910.40-130,408.80-34,321.60

Finding the Fourth Proportional to 86,910.40, 130,408.80 and 34,321.60

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Solution

The fourth proportional to 86,910.40, 130,408.80 and 34,321.60 is: 51,499.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910.40 : 130,408.80 = 34,321.60 : x
  2. Step 2: Convert to fraction form
    86,910.40/130,408.80 = 34,321.60/x
  3. Step 3: Cross multiply
    86,910.40x = 130,408.80 × 34,321.60
  4. Step 4: Simplify right side
    86,910.40x = 4,475,838,670.08
  5. Step 5: Solve for x
    x = 4,475,838,670.08/86,910.40
  6. Step 6: Final answer
    x = 51,499.46

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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.