Home / 52,153.92-78,241.60-20,989.12

Finding the Fourth Proportional to 52,153.92, 78,241.60 and 20,989.12

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Solution

The fourth proportional to 52,153.92, 78,241.60 and 20,989.12 is: 31,487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,153.92 : 78,241.60 = 20,989.12 : x
  2. Step 2: Convert to fraction form
    52,153.92/78,241.60 = 20,989.12/x
  3. Step 3: Cross multiply
    52,153.92x = 78,241.60 × 20,989.12
  4. Step 4: Simplify right side
    52,153.92x = 1,642,222,331.39
  5. Step 5: Solve for x
    x = 1,642,222,331.39/52,153.92
  6. Step 6: Final answer
    x = 31,487.99

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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.