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Finding the Fourth Proportional to 72,295.48, 99,755.85 and 45,418.96

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Solution

The fourth proportional to 72,295.48, 99,755.85 and 45,418.96 is: 62,670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,295.48 : 99,755.85 = 45,418.96 : x
  2. Step 2: Convert to fraction form
    72,295.48/99,755.85 = 45,418.96/x
  3. Step 3: Cross multiply
    72,295.48x = 99,755.85 × 45,418.96
  4. Step 4: Simplify right side
    72,295.48x = 4,530,806,960.92
  5. Step 5: Solve for x
    x = 4,530,806,960.92/72,295.48
  6. Step 6: Final answer
    x = 62,670.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.