Home / 85,847.25-118,476.51-48,128.79

Finding the Fourth Proportional to 85,847.25, 118,476.51 and 48,128.79

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Solution

The fourth proportional to 85,847.25, 118,476.51 and 48,128.79 is: 66,421.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,847.25 : 118,476.51 = 48,128.79 : x
  2. Step 2: Convert to fraction form
    85,847.25/118,476.51 = 48,128.79/x
  3. Step 3: Cross multiply
    85,847.25x = 118,476.51 × 48,128.79
  4. Step 4: Simplify right side
    85,847.25x = 5,702,131,069.72
  5. Step 5: Solve for x
    x = 5,702,131,069.72/85,847.25
  6. Step 6: Final answer
    x = 66,421.83

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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.