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Finding the Fourth Proportional to 86,858.40, 130,330.80 and 34,269.60

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Solution

The fourth proportional to 86,858.40, 130,330.80 and 34,269.60 is: 51,421.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,858.40 : 130,330.80 = 34,269.60 : x
  2. Step 2: Convert to fraction form
    86,858.40/130,330.80 = 34,269.60/x
  3. Step 3: Cross multiply
    86,858.40x = 130,330.80 × 34,269.60
  4. Step 4: Simplify right side
    86,858.40x = 4,466,384,383.68
  5. Step 5: Solve for x
    x = 4,466,384,383.68/86,858.40
  6. Step 6: Final answer
    x = 51,421.44

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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.