Home / 80,710.02-121,099.86-30,805.11

Finding the Fourth Proportional to 80,710.02, 121,099.86 and 30,805.11

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Solution

The fourth proportional to 80,710.02, 121,099.86 and 30,805.11 is: 46,220.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,710.02 : 121,099.86 = 30,805.11 : x
  2. Step 2: Convert to fraction form
    80,710.02/121,099.86 = 30,805.11/x
  3. Step 3: Cross multiply
    80,710.02x = 121,099.86 × 30,805.11
  4. Step 4: Simplify right side
    80,710.02x = 3,730,494,508.28
  5. Step 5: Solve for x
    x = 3,730,494,508.28/80,710.02
  6. Step 6: Final answer
    x = 46,220.96

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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.