Home / 45,187.39-67,688.61-21,137.14

Finding the Fourth Proportional to 45,187.39, 67,688.61 and 21,137.14

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Solution

The fourth proportional to 45,187.39, 67,688.61 and 21,137.14 is: 31,662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,187.39 : 67,688.61 = 21,137.14 : x
  2. Step 2: Convert to fraction form
    45,187.39/67,688.61 = 21,137.14/x
  3. Step 3: Cross multiply
    45,187.39x = 67,688.61 × 21,137.14
  4. Step 4: Simplify right side
    45,187.39x = 1,430,743,625.98
  5. Step 5: Solve for x
    x = 1,430,743,625.98/45,187.39
  6. Step 6: Final answer
    x = 31,662.45

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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.