Home / 85,929.35-128,892.60-35,318.12

Finding the Fourth Proportional to 85,929.35, 128,892.60 and 35,318.12

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Solution

The fourth proportional to 85,929.35, 128,892.60 and 35,318.12 is: 52,976.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,929.35 : 128,892.60 = 35,318.12 : x
  2. Step 2: Convert to fraction form
    85,929.35/128,892.60 = 35,318.12/x
  3. Step 3: Cross multiply
    85,929.35x = 128,892.60 × 35,318.12
  4. Step 4: Simplify right side
    85,929.35x = 4,552,244,313.91
  5. Step 5: Solve for x
    x = 4,552,244,313.91/85,929.35
  6. Step 6: Final answer
    x = 52,976.59

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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.