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Finding the Fourth Proportional to 72,119.92, 99,518.78 and 41,904.92

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Solution

The fourth proportional to 72,119.92, 99,518.78 and 41,904.92 is: 57,824.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,119.92 : 99,518.78 = 41,904.92 : x
  2. Step 2: Convert to fraction form
    72,119.92/99,518.78 = 41,904.92/x
  3. Step 3: Cross multiply
    72,119.92x = 99,518.78 × 41,904.92
  4. Step 4: Simplify right side
    72,119.92x = 4,170,326,514.40
  5. Step 5: Solve for x
    x = 4,170,326,514.40/72,119.92
  6. Step 6: Final answer
    x = 57,824.89

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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.