Home / 80,693.04-121,040.10-28,102.35

Finding the Fourth Proportional to 80,693.04, 121,040.10 and 28,102.35

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Solution

The fourth proportional to 80,693.04, 121,040.10 and 28,102.35 is: 42,153.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,693.04 : 121,040.10 = 28,102.35 : x
  2. Step 2: Convert to fraction form
    80,693.04/121,040.10 = 28,102.35/x
  3. Step 3: Cross multiply
    80,693.04x = 121,040.10 × 28,102.35
  4. Step 4: Simplify right side
    80,693.04x = 3,401,511,254.24
  5. Step 5: Solve for x
    x = 3,401,511,254.24/80,693.04
  6. Step 6: Final answer
    x = 42,153.71

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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.