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Finding the Fourth Proportional to 40,057.49, 55,279.70 and 22,153.70

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Solution

The fourth proportional to 40,057.49, 55,279.70 and 22,153.70 is: 30,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,057.49 : 55,279.70 = 22,153.70 : x
  2. Step 2: Convert to fraction form
    40,057.49/55,279.70 = 22,153.70/x
  3. Step 3: Cross multiply
    40,057.49x = 55,279.70 × 22,153.70
  4. Step 4: Simplify right side
    40,057.49x = 1,224,649,502.72
  5. Step 5: Solve for x
    x = 1,224,649,502.72/40,057.49
  6. Step 6: Final answer
    x = 30,572.30

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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.