Home / 85,512.12-118,007.46-47,788.80

Finding the Fourth Proportional to 85,512.12, 118,007.46 and 47,788.80

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Solution

The fourth proportional to 85,512.12, 118,007.46 and 47,788.80 is: 65,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.12 : 118,007.46 = 47,788.80 : x
  2. Step 2: Convert to fraction form
    85,512.12/118,007.46 = 47,788.80/x
  3. Step 3: Cross multiply
    85,512.12x = 118,007.46 × 47,788.80
  4. Step 4: Simplify right side
    85,512.12x = 5,639,434,904.45
  5. Step 5: Solve for x
    x = 5,639,434,904.45/85,512.12
  6. Step 6: Final answer
    x = 65,948.95

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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.