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Finding the Fourth Proportional to 60,392.63, 90,605.00 and 20,949.68

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Solution

The fourth proportional to 60,392.63, 90,605.00 and 20,949.68 is: 31,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,392.63 : 90,605.00 = 20,949.68 : x
  2. Step 2: Convert to fraction form
    60,392.63/90,605.00 = 20,949.68/x
  3. Step 3: Cross multiply
    60,392.63x = 90,605.00 × 20,949.68
  4. Step 4: Simplify right side
    60,392.63x = 1,898,145,355.75
  5. Step 5: Solve for x
    x = 1,898,145,355.75/60,392.63
  6. Step 6: Final answer
    x = 31,430.09

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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.