Home / 85,513.60-128,298.06-41,134.54

Finding the Fourth Proportional to 85,513.60, 128,298.06 and 41,134.54

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Solution

The fourth proportional to 85,513.60, 128,298.06 and 41,134.54 is: 61,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,513.60 : 128,298.06 = 41,134.54 : x
  2. Step 2: Convert to fraction form
    85,513.60/128,298.06 = 41,134.54/x
  3. Step 3: Cross multiply
    85,513.60x = 128,298.06 × 41,134.54
  4. Step 4: Simplify right side
    85,513.60x = 5,277,481,680.99
  5. Step 5: Solve for x
    x = 5,277,481,680.99/85,513.60
  6. Step 6: Final answer
    x = 61,715.12

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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.