Home / 80,533.02-120,781.17-30,618.66

Finding the Fourth Proportional to 80,533.02, 120,781.17 and 30,618.66

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Solution

The fourth proportional to 80,533.02, 120,781.17 and 30,618.66 is: 45,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,533.02 : 120,781.17 = 30,618.66 : x
  2. Step 2: Convert to fraction form
    80,533.02/120,781.17 = 30,618.66/x
  3. Step 3: Cross multiply
    80,533.02x = 120,781.17 × 30,618.66
  4. Step 4: Simplify right side
    80,533.02x = 3,698,157,578.63
  5. Step 5: Solve for x
    x = 3,698,157,578.63/80,533.02
  6. Step 6: Final answer
    x = 45,921.01

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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.