Home / 72,009.52-99,372.84-40,176.48

Finding the Fourth Proportional to 72,009.52, 99,372.84 and 40,176.48

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Solution

The fourth proportional to 72,009.52, 99,372.84 and 40,176.48 is: 55,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.52 : 99,372.84 = 40,176.48 : x
  2. Step 2: Convert to fraction form
    72,009.52/99,372.84 = 40,176.48/x
  3. Step 3: Cross multiply
    72,009.52x = 99,372.84 × 40,176.48
  4. Step 4: Simplify right side
    72,009.52x = 3,992,450,918.80
  5. Step 5: Solve for x
    x = 3,992,450,918.80/72,009.52
  6. Step 6: Final answer
    x = 55,443.38

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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.