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Finding the Fourth Proportional to 56,370, 77,793.03 and 31,219.50

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Solution

The fourth proportional to 56,370, 77,793.03 and 31,219.50 is: 43,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,370 : 77,793.03 = 31,219.50 : x
  2. Step 2: Convert to fraction form
    56,370/77,793.03 = 31,219.50/x
  3. Step 3: Cross multiply
    56,370x = 77,793.03 × 31,219.50
  4. Step 4: Simplify right side
    56,370x = 2,428,659,500.09
  5. Step 5: Solve for x
    x = 2,428,659,500.09/56,370
  6. Step 6: Final answer
    x = 43,084.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.