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Finding the Fourth Proportional to 57,959.40, 86,996.70 and 28,410.60

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Solution

The fourth proportional to 57,959.40, 86,996.70 and 28,410.60 is: 42,644.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,959.40 : 86,996.70 = 28,410.60 : x
  2. Step 2: Convert to fraction form
    57,959.40/86,996.70 = 28,410.60/x
  3. Step 3: Cross multiply
    57,959.40x = 86,996.70 × 28,410.60
  4. Step 4: Simplify right side
    57,959.40x = 2,471,628,445.02
  5. Step 5: Solve for x
    x = 2,471,628,445.02/57,959.40
  6. Step 6: Final answer
    x = 42,644.13

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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.