Home / 40,878.45-56,408.78-22,972.05

Finding the Fourth Proportional to 40,878.45, 56,408.78 and 22,972.05

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Solution

The fourth proportional to 40,878.45, 56,408.78 and 22,972.05 is: 31,699.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,878.45 : 56,408.78 = 22,972.05 : x
  2. Step 2: Convert to fraction form
    40,878.45/56,408.78 = 22,972.05/x
  3. Step 3: Cross multiply
    40,878.45x = 56,408.78 × 22,972.05
  4. Step 4: Simplify right side
    40,878.45x = 1,295,825,199.74
  5. Step 5: Solve for x
    x = 1,295,825,199.74/40,878.45
  6. Step 6: Final answer
    x = 31,699.47

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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.