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Finding the Fourth Proportional to 75,320.94, 103,952.12 and 43,489.79

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Solution

The fourth proportional to 75,320.94, 103,952.12 and 43,489.79 is: 60,021.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,320.94 : 103,952.12 = 43,489.79 : x
  2. Step 2: Convert to fraction form
    75,320.94/103,952.12 = 43,489.79/x
  3. Step 3: Cross multiply
    75,320.94x = 103,952.12 × 43,489.79
  4. Step 4: Simplify right side
    75,320.94x = 4,520,855,868.85
  5. Step 5: Solve for x
    x = 4,520,855,868.85/75,320.94
  6. Step 6: Final answer
    x = 60,021.24

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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.