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Finding the Fourth Proportional to 72,446.83, 99,965.80 and 41,399.74

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Solution

The fourth proportional to 72,446.83, 99,965.80 and 41,399.74 is: 57,125.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,446.83 : 99,965.80 = 41,399.74 : x
  2. Step 2: Convert to fraction form
    72,446.83/99,965.80 = 41,399.74/x
  3. Step 3: Cross multiply
    72,446.83x = 99,965.80 × 41,399.74
  4. Step 4: Simplify right side
    72,446.83x = 4,138,557,510.42
  5. Step 5: Solve for x
    x = 4,138,557,510.42/72,446.83
  6. Step 6: Final answer
    x = 57,125.44

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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.