Home / 85,609.12-118,169.74-49,829.19

Finding the Fourth Proportional to 85,609.12, 118,169.74 and 49,829.19

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Solution

The fourth proportional to 85,609.12, 118,169.74 and 49,829.19 is: 68,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,609.12 : 118,169.74 = 49,829.19 : x
  2. Step 2: Convert to fraction form
    85,609.12/118,169.74 = 49,829.19/x
  3. Step 3: Cross multiply
    85,609.12x = 118,169.74 × 49,829.19
  4. Step 4: Simplify right side
    85,609.12x = 5,888,302,430.28
  5. Step 5: Solve for x
    x = 5,888,302,430.28/85,609.12
  6. Step 6: Final answer
    x = 68,781.25

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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.