Home / 89,851.20-134,776.80-61,857.60

Finding the Fourth Proportional to 89,851.20, 134,776.80 and 61,857.60

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Solution

The fourth proportional to 89,851.20, 134,776.80 and 61,857.60 is: 92,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,851.20 : 134,776.80 = 61,857.60 : x
  2. Step 2: Convert to fraction form
    89,851.20/134,776.80 = 61,857.60/x
  3. Step 3: Cross multiply
    89,851.20x = 134,776.80 × 61,857.60
  4. Step 4: Simplify right side
    89,851.20x = 8,336,969,383.68
  5. Step 5: Solve for x
    x = 8,336,969,383.68/89,851.20
  6. Step 6: Final answer
    x = 92,786.40

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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.