Home / 85,138.50-117,491.10-49,349.26

Finding the Fourth Proportional to 85,138.50, 117,491.10 and 49,349.26

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Solution

The fourth proportional to 85,138.50, 117,491.10 and 49,349.26 is: 68,101.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,138.50 : 117,491.10 = 49,349.26 : x
  2. Step 2: Convert to fraction form
    85,138.50/117,491.10 = 49,349.26/x
  3. Step 3: Cross multiply
    85,138.50x = 117,491.10 × 49,349.26
  4. Step 4: Simplify right side
    85,138.50x = 5,798,098,841.59
  5. Step 5: Solve for x
    x = 5,798,098,841.59/85,138.50
  6. Step 6: Final answer
    x = 68,101.96

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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.