Home / 72,115.21-99,518.52-40,283.83

Finding the Fourth Proportional to 72,115.21, 99,518.52 and 40,283.83

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Solution

The fourth proportional to 72,115.21, 99,518.52 and 40,283.83 is: 55,591.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.21 : 99,518.52 = 40,283.83 : x
  2. Step 2: Convert to fraction form
    72,115.21/99,518.52 = 40,283.83/x
  3. Step 3: Cross multiply
    72,115.21x = 99,518.52 × 40,283.83
  4. Step 4: Simplify right side
    72,115.21x = 4,008,987,141.53
  5. Step 5: Solve for x
    x = 4,008,987,141.53/72,115.21
  6. Step 6: Final answer
    x = 55,591.42

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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.