Home / 80,802.21-121,203.36-38,672.39

Finding the Fourth Proportional to 80,802.21, 121,203.36 and 38,672.39

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Solution

The fourth proportional to 80,802.21, 121,203.36 and 38,672.39 is: 58,008.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,802.21 : 121,203.36 = 38,672.39 : x
  2. Step 2: Convert to fraction form
    80,802.21/121,203.36 = 38,672.39/x
  3. Step 3: Cross multiply
    80,802.21x = 121,203.36 × 38,672.39
  4. Step 4: Simplify right side
    80,802.21x = 4,687,223,607.23
  5. Step 5: Solve for x
    x = 4,687,223,607.23/80,802.21
  6. Step 6: Final answer
    x = 58,008.61

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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.