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Finding the Fourth Proportional to 72,418.92, 99,942 and 40,598.04

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Solution

The fourth proportional to 72,418.92, 99,942 and 40,598.04 is: 56,027.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,418.92 : 99,942 = 40,598.04 : x
  2. Step 2: Convert to fraction form
    72,418.92/99,942 = 40,598.04/x
  3. Step 3: Cross multiply
    72,418.92x = 99,942 × 40,598.04
  4. Step 4: Simplify right side
    72,418.92x = 4,057,449,313.68
  5. Step 5: Solve for x
    x = 4,057,449,313.68/72,418.92
  6. Step 6: Final answer
    x = 56,027.48

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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.