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Finding the Fourth Proportional to 60,241.70, 90,355.26 and 20,802.80

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Solution

The fourth proportional to 60,241.70, 90,355.26 and 20,802.80 is: 31,201.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,241.70 : 90,355.26 = 20,802.80 : x
  2. Step 2: Convert to fraction form
    60,241.70/90,355.26 = 20,802.80/x
  3. Step 3: Cross multiply
    60,241.70x = 90,355.26 × 20,802.80
  4. Step 4: Simplify right side
    60,241.70x = 1,879,642,402.73
  5. Step 5: Solve for x
    x = 1,879,642,402.73/60,241.70
  6. Step 6: Final answer
    x = 31,201.68

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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.