Home / 85,273.20-127,946.64-45,784.08

Finding the Fourth Proportional to 85,273.20, 127,946.64 and 45,784.08

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Solution

The fourth proportional to 85,273.20, 127,946.64 and 45,784.08 is: 68,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,273.20 : 127,946.64 = 45,784.08 : x
  2. Step 2: Convert to fraction form
    85,273.20/127,946.64 = 45,784.08/x
  3. Step 3: Cross multiply
    85,273.20x = 127,946.64 × 45,784.08
  4. Step 4: Simplify right side
    85,273.20x = 5,857,919,201.49
  5. Step 5: Solve for x
    x = 5,857,919,201.49/85,273.20
  6. Step 6: Final answer
    x = 68,695.90

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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.