Home / 85,511.76-128,295.32-41,132.74

Finding the Fourth Proportional to 85,511.76, 128,295.32 and 41,132.74

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Solution

The fourth proportional to 85,511.76, 128,295.32 and 41,132.74 is: 61,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,511.76 : 128,295.32 = 41,132.74 : x
  2. Step 2: Convert to fraction form
    85,511.76/128,295.32 = 41,132.74/x
  3. Step 3: Cross multiply
    85,511.76x = 128,295.32 × 41,132.74
  4. Step 4: Simplify right side
    85,511.76x = 5,277,138,040.78
  5. Step 5: Solve for x
    x = 5,277,138,040.78/85,511.76
  6. Step 6: Final answer
    x = 61,712.42

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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.