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Finding the Fourth Proportional to 89,344.80, 134,119.60 and 52,429.60

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Solution

The fourth proportional to 89,344.80, 134,119.60 and 52,429.60 is: 78,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,344.80 : 134,119.60 = 52,429.60 : x
  2. Step 2: Convert to fraction form
    89,344.80/134,119.60 = 52,429.60/x
  3. Step 3: Cross multiply
    89,344.80x = 134,119.60 × 52,429.60
  4. Step 4: Simplify right side
    89,344.80x = 7,031,836,980.16
  5. Step 5: Solve for x
    x = 7,031,836,980.16/89,344.80
  6. Step 6: Final answer
    x = 78,704.49

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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.