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Finding the Fourth Proportional to 67,773.60, 101,631.24 and 21,030.12

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Solution

The fourth proportional to 67,773.60, 101,631.24 and 21,030.12 is: 31,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,773.60 : 101,631.24 = 21,030.12 : x
  2. Step 2: Convert to fraction form
    67,773.60/101,631.24 = 21,030.12/x
  3. Step 3: Cross multiply
    67,773.60x = 101,631.24 × 21,030.12
  4. Step 4: Simplify right side
    67,773.60x = 2,137,317,172.95
  5. Step 5: Solve for x
    x = 2,137,317,172.95/67,773.60
  6. Step 6: Final answer
    x = 31,536.13

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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.