Home / 85,515.25-118,011.05-47,789.50

Finding the Fourth Proportional to 85,515.25, 118,011.05 and 47,789.50

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Solution

The fourth proportional to 85,515.25, 118,011.05 and 47,789.50 is: 65,949.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.25 : 118,011.05 = 47,789.50 : x
  2. Step 2: Convert to fraction form
    85,515.25/118,011.05 = 47,789.50/x
  3. Step 3: Cross multiply
    85,515.25x = 118,011.05 × 47,789.50
  4. Step 4: Simplify right side
    85,515.25x = 5,639,689,073.98
  5. Step 5: Solve for x
    x = 5,639,689,073.98/85,515.25
  6. Step 6: Final answer
    x = 65,949.51

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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.