Home / 72,611,153.92-100,203,390.72-40,016,105.92

Finding the Fourth Proportional to 72,611,153.92, 100,203,390.72 and 40,016,105.92

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Solution

The fourth proportional to 72,611,153.92, 100,203,390.72 and 40,016,105.92 is: 55,222,225.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,611,153.92 : 100,203,390.72 = 40,016,105.92 : x
  2. Step 2: Convert to fraction form
    72,611,153.92/100,203,390.72 = 40,016,105.92/x
  3. Step 3: Cross multiply
    72,611,153.92x = 100,203,390.72 × 40,016,105.92
  4. Step 4: Simplify right side
    72,611,153.92x = 4,009,749,496,594,665
  5. Step 5: Solve for x
    x = 4,009,749,496,594,665/72,611,153.92
  6. Step 6: Final answer
    x = 55,222,225.24

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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.