Home / 72,211.44-99,656.38-40,380.34

Finding the Fourth Proportional to 72,211.44, 99,656.38 and 40,380.34

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Solution

The fourth proportional to 72,211.44, 99,656.38 and 40,380.34 is: 55,727.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,211.44 : 99,656.38 = 40,380.34 : x
  2. Step 2: Convert to fraction form
    72,211.44/99,656.38 = 40,380.34/x
  3. Step 3: Cross multiply
    72,211.44x = 99,656.38 × 40,380.34
  4. Step 4: Simplify right side
    72,211.44x = 4,024,158,507.57
  5. Step 5: Solve for x
    x = 4,024,158,507.57/72,211.44
  6. Step 6: Final answer
    x = 55,727.44

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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.