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Finding the Fourth Proportional to 85,292.67, 117,709.66 and 49,482.70

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Solution

The fourth proportional to 85,292.67, 117,709.66 and 49,482.70 is: 68,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,292.67 : 117,709.66 = 49,482.70 : x
  2. Step 2: Convert to fraction form
    85,292.67/117,709.66 = 49,482.70/x
  3. Step 3: Cross multiply
    85,292.67x = 117,709.66 × 49,482.70
  4. Step 4: Simplify right side
    85,292.67x = 5,824,591,282.12
  5. Step 5: Solve for x
    x = 5,824,591,282.12/85,292.67
  6. Step 6: Final answer
    x = 68,289.47

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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.