Home / 72,275.08-99,743.79-40,443.70

Finding the Fourth Proportional to 72,275.08, 99,743.79 and 40,443.70

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Solution

The fourth proportional to 72,275.08, 99,743.79 and 40,443.70 is: 55,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,275.08 : 99,743.79 = 40,443.70 : x
  2. Step 2: Convert to fraction form
    72,275.08/99,743.79 = 40,443.70/x
  3. Step 3: Cross multiply
    72,275.08x = 99,743.79 × 40,443.70
  4. Step 4: Simplify right side
    72,275.08x = 4,034,007,919.62
  5. Step 5: Solve for x
    x = 4,034,007,919.62/72,275.08
  6. Step 6: Final answer
    x = 55,814.64

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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.