Home / 72,001.42-99,362.02-40,170.33

Finding the Fourth Proportional to 72,001.42, 99,362.02 and 40,170.33

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Solution

The fourth proportional to 72,001.42, 99,362.02 and 40,170.33 is: 55,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.42 : 99,362.02 = 40,170.33 : x
  2. Step 2: Convert to fraction form
    72,001.42/99,362.02 = 40,170.33/x
  3. Step 3: Cross multiply
    72,001.42x = 99,362.02 × 40,170.33
  4. Step 4: Simplify right side
    72,001.42x = 3,991,405,132.87
  5. Step 5: Solve for x
    x = 3,991,405,132.87/72,001.42
  6. Step 6: Final answer
    x = 55,435.09

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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.