Home / 72,257.60-99,715.94-40,426.49

Finding the Fourth Proportional to 72,257.60, 99,715.94 and 40,426.49

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Solution

The fourth proportional to 72,257.60, 99,715.94 and 40,426.49 is: 55,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.60 : 99,715.94 = 40,426.49 : x
  2. Step 2: Convert to fraction form
    72,257.60/99,715.94 = 40,426.49/x
  3. Step 3: Cross multiply
    72,257.60x = 99,715.94 × 40,426.49
  4. Step 4: Simplify right side
    72,257.60x = 4,031,165,249.12
  5. Step 5: Solve for x
    x = 4,031,165,249.12/72,257.60
  6. Step 6: Final answer
    x = 55,788.81

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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.