Home / 52,129.68-78,194.48-20,957.64

Finding the Fourth Proportional to 52,129.68, 78,194.48 and 20,957.64

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Solution

The fourth proportional to 52,129.68, 78,194.48 and 20,957.64 is: 31,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129.68 : 78,194.48 = 20,957.64 : x
  2. Step 2: Convert to fraction form
    52,129.68/78,194.48 = 20,957.64/x
  3. Step 3: Cross multiply
    52,129.68x = 78,194.48 × 20,957.64
  4. Step 4: Simplify right side
    52,129.68x = 1,638,771,761.83
  5. Step 5: Solve for x
    x = 1,638,771,761.83/52,129.68
  6. Step 6: Final answer
    x = 31,436.44

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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.