Home / 85,645.64-118,194.18-47,920.16

Finding the Fourth Proportional to 85,645.64, 118,194.18 and 47,920.16

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Solution

The fourth proportional to 85,645.64, 118,194.18 and 47,920.16 is: 66,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,645.64 : 118,194.18 = 47,920.16 : x
  2. Step 2: Convert to fraction form
    85,645.64/118,194.18 = 47,920.16/x
  3. Step 3: Cross multiply
    85,645.64x = 118,194.18 × 47,920.16
  4. Step 4: Simplify right side
    85,645.64x = 5,663,884,016.67
  5. Step 5: Solve for x
    x = 5,663,884,016.67/85,645.64
  6. Step 6: Final answer
    x = 66,131.61

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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.