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Finding the Fourth Proportional to 85,151.83, 117,503.89 and 49,335.46

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Solution

The fourth proportional to 85,151.83, 117,503.89 and 49,335.46 is: 68,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,151.83 : 117,503.89 = 49,335.46 : x
  2. Step 2: Convert to fraction form
    85,151.83/117,503.89 = 49,335.46/x
  3. Step 3: Cross multiply
    85,151.83x = 117,503.89 × 49,335.46
  4. Step 4: Simplify right side
    85,151.83x = 5,797,108,464.94
  5. Step 5: Solve for x
    x = 5,797,108,464.94/85,151.83
  6. Step 6: Final answer
    x = 68,079.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.