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Finding the Fourth Proportional to 56,248.80, 84,380.40 and 20,712.48

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Solution

The fourth proportional to 56,248.80, 84,380.40 and 20,712.48 is: 31,071.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,248.80 : 84,380.40 = 20,712.48 : x
  2. Step 2: Convert to fraction form
    56,248.80/84,380.40 = 20,712.48/x
  3. Step 3: Cross multiply
    56,248.80x = 84,380.40 × 20,712.48
  4. Step 4: Simplify right side
    56,248.80x = 1,747,727,347.39
  5. Step 5: Solve for x
    x = 1,747,727,347.39/56,248.80
  6. Step 6: Final answer
    x = 31,071.37

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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.