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Finding the Fourth Proportional to 40,809.20, 61,213.80 and 36,726.80

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Solution

The fourth proportional to 40,809.20, 61,213.80 and 36,726.80 is: 55,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,809.20 : 61,213.80 = 36,726.80 : x
  2. Step 2: Convert to fraction form
    40,809.20/61,213.80 = 36,726.80/x
  3. Step 3: Cross multiply
    40,809.20x = 61,213.80 × 36,726.80
  4. Step 4: Simplify right side
    40,809.20x = 2,248,186,989.84
  5. Step 5: Solve for x
    x = 2,248,186,989.84/40,809.20
  6. Step 6: Final answer
    x = 55,090.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.