Home / 72,409.48-99,930.68-40,581.32

Finding the Fourth Proportional to 72,409.48, 99,930.68 and 40,581.32

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Solution

The fourth proportional to 72,409.48, 99,930.68 and 40,581.32 is: 56,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,409.48 : 99,930.68 = 40,581.32 : x
  2. Step 2: Convert to fraction form
    72,409.48/99,930.68 = 40,581.32/x
  3. Step 3: Cross multiply
    72,409.48x = 99,930.68 × 40,581.32
  4. Step 4: Simplify right side
    72,409.48x = 4,055,318,902.90
  5. Step 5: Solve for x
    x = 4,055,318,902.90/72,409.48
  6. Step 6: Final answer
    x = 56,005.36

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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.