Home / 80,905.41-121,314.15-36,480.15

Finding the Fourth Proportional to 80,905.41, 121,314.15 and 36,480.15

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Solution

The fourth proportional to 80,905.41, 121,314.15 and 36,480.15 is: 54,700.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,905.41 : 121,314.15 = 36,480.15 : x
  2. Step 2: Convert to fraction form
    80,905.41/121,314.15 = 36,480.15/x
  3. Step 3: Cross multiply
    80,905.41x = 121,314.15 × 36,480.15
  4. Step 4: Simplify right side
    80,905.41x = 4,425,558,389.12
  5. Step 5: Solve for x
    x = 4,425,558,389.12/80,905.41
  6. Step 6: Final answer
    x = 54,700.40

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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.