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Finding the Fourth Proportional to 52,131.84, 78,197.28 and 18,839.28

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Solution

The fourth proportional to 52,131.84, 78,197.28 and 18,839.28 is: 28,258.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,131.84 : 78,197.28 = 18,839.28 : x
  2. Step 2: Convert to fraction form
    52,131.84/78,197.28 = 18,839.28/x
  3. Step 3: Cross multiply
    52,131.84x = 78,197.28 × 18,839.28
  4. Step 4: Simplify right side
    52,131.84x = 1,473,180,453.16
  5. Step 5: Solve for x
    x = 1,473,180,453.16/52,131.84
  6. Step 6: Final answer
    x = 28,258.75

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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.