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Finding the Fourth Proportional to 56,066.80, 84,097.14 and 21,003.88

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Solution

The fourth proportional to 56,066.80, 84,097.14 and 21,003.88 is: 31,504.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,066.80 : 84,097.14 = 21,003.88 : x
  2. Step 2: Convert to fraction form
    56,066.80/84,097.14 = 21,003.88/x
  3. Step 3: Cross multiply
    56,066.80x = 84,097.14 × 21,003.88
  4. Step 4: Simplify right side
    56,066.80x = 1,766,366,236.90
  5. Step 5: Solve for x
    x = 1,766,366,236.90/56,066.80
  6. Step 6: Final answer
    x = 31,504.67

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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.