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Finding the Fourth Proportional to 72,392.96, 99,901.32 and 40,562.48

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Solution

The fourth proportional to 72,392.96, 99,901.32 and 40,562.48 is: 55,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.96 : 99,901.32 = 40,562.48 : x
  2. Step 2: Convert to fraction form
    72,392.96/99,901.32 = 40,562.48/x
  3. Step 3: Cross multiply
    72,392.96x = 99,901.32 × 40,562.48
  4. Step 4: Simplify right side
    72,392.96x = 4,052,245,294.47
  5. Step 5: Solve for x
    x = 4,052,245,294.47/72,392.96
  6. Step 6: Final answer
    x = 55,975.68

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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.