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Finding the Fourth Proportional to 48,640.60, 72,960.90 and 19,048.60

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Solution

The fourth proportional to 48,640.60, 72,960.90 and 19,048.60 is: 28,572.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,640.60 : 72,960.90 = 19,048.60 : x
  2. Step 2: Convert to fraction form
    48,640.60/72,960.90 = 19,048.60/x
  3. Step 3: Cross multiply
    48,640.60x = 72,960.90 × 19,048.60
  4. Step 4: Simplify right side
    48,640.60x = 1,389,802,999.74
  5. Step 5: Solve for x
    x = 1,389,802,999.74/48,640.60
  6. Step 6: Final answer
    x = 28,572.90

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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.