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Finding the Fourth Proportional to 99,550.86, 149,344.70 and 28,470.48

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Solution

The fourth proportional to 99,550.86, 149,344.70 and 28,470.48 is: 42,710.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,550.86 : 149,344.70 = 28,470.48 : x
  2. Step 2: Convert to fraction form
    99,550.86/149,344.70 = 28,470.48/x
  3. Step 3: Cross multiply
    99,550.86x = 149,344.70 × 28,470.48
  4. Step 4: Simplify right side
    99,550.86x = 4,251,915,152.10
  5. Step 5: Solve for x
    x = 4,251,915,152.10/99,550.86
  6. Step 6: Final answer
    x = 42,710.98

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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.