Home / 72,115.48-99,514.98-40,286.44

Finding the Fourth Proportional to 72,115.48, 99,514.98 and 40,286.44

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Solution

The fourth proportional to 72,115.48, 99,514.98 and 40,286.44 is: 55,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.48 : 99,514.98 = 40,286.44 : x
  2. Step 2: Convert to fraction form
    72,115.48/99,514.98 = 40,286.44/x
  3. Step 3: Cross multiply
    72,115.48x = 99,514.98 × 40,286.44
  4. Step 4: Simplify right side
    72,115.48x = 4,009,104,270.87
  5. Step 5: Solve for x
    x = 4,009,104,270.87/72,115.48
  6. Step 6: Final answer
    x = 55,592.84

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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.