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Finding the Fourth Proportional to 40,513.70, 55,911.72 and 22,612.20

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Solution

The fourth proportional to 40,513.70, 55,911.72 and 22,612.20 is: 31,206.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.70 : 55,911.72 = 22,612.20 : x
  2. Step 2: Convert to fraction form
    40,513.70/55,911.72 = 22,612.20/x
  3. Step 3: Cross multiply
    40,513.70x = 55,911.72 × 22,612.20
  4. Step 4: Simplify right side
    40,513.70x = 1,264,286,994.98
  5. Step 5: Solve for x
    x = 1,264,286,994.98/40,513.70
  6. Step 6: Final answer
    x = 31,206.41

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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.