Home / 80,963.69-121,416.37-34,220.21

Finding the Fourth Proportional to 80,963.69, 121,416.37 and 34,220.21

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Solution

The fourth proportional to 80,963.69, 121,416.37 and 34,220.21 is: 51,317.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,963.69 : 121,416.37 = 34,220.21 : x
  2. Step 2: Convert to fraction form
    80,963.69/121,416.37 = 34,220.21/x
  3. Step 3: Cross multiply
    80,963.69x = 121,416.37 × 34,220.21
  4. Step 4: Simplify right side
    80,963.69x = 4,154,892,986.21
  5. Step 5: Solve for x
    x = 4,154,892,986.21/80,963.69
  6. Step 6: Final answer
    x = 51,317.98

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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.