Home / 85,696.20-128,523.33-35,776.71

Finding the Fourth Proportional to 85,696.20, 128,523.33 and 35,776.71

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Solution

The fourth proportional to 85,696.20, 128,523.33 and 35,776.71 is: 53,656.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,696.20 : 128,523.33 = 35,776.71 : x
  2. Step 2: Convert to fraction form
    85,696.20/128,523.33 = 35,776.71/x
  3. Step 3: Cross multiply
    85,696.20x = 128,523.33 × 35,776.71
  4. Step 4: Simplify right side
    85,696.20x = 4,598,141,905.64
  5. Step 5: Solve for x
    x = 4,598,141,905.64/85,696.20
  6. Step 6: Final answer
    x = 53,656.31

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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.