Home / 85,448.16-117,909.60-49,645.68

Finding the Fourth Proportional to 85,448.16, 117,909.60 and 49,645.68

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Solution

The fourth proportional to 85,448.16, 117,909.60 and 49,645.68 is: 68,505.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.16 : 117,909.60 = 49,645.68 : x
  2. Step 2: Convert to fraction form
    85,448.16/117,909.60 = 49,645.68/x
  3. Step 3: Cross multiply
    85,448.16x = 117,909.60 × 49,645.68
  4. Step 4: Simplify right side
    85,448.16x = 5,853,702,270.53
  5. Step 5: Solve for x
    x = 5,853,702,270.53/85,448.16
  6. Step 6: Final answer
    x = 68,505.89

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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.