Home / 72,439.25-99,966.90-40,174.50

Finding the Fourth Proportional to 72,439.25, 99,966.90 and 40,174.50

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Solution

The fourth proportional to 72,439.25, 99,966.90 and 40,174.50 is: 55,441.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.25 : 99,966.90 = 40,174.50 : x
  2. Step 2: Convert to fraction form
    72,439.25/99,966.90 = 40,174.50/x
  3. Step 3: Cross multiply
    72,439.25x = 99,966.90 × 40,174.50
  4. Step 4: Simplify right side
    72,439.25x = 4,016,120,224.05
  5. Step 5: Solve for x
    x = 4,016,120,224.05/72,439.25
  6. Step 6: Final answer
    x = 55,441.22

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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.