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Finding the Fourth Proportional to 85,396.39, 117,838.06 and 49,579.40

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Solution

The fourth proportional to 85,396.39, 117,838.06 and 49,579.40 is: 68,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,396.39 : 117,838.06 = 49,579.40 : x
  2. Step 2: Convert to fraction form
    85,396.39/117,838.06 = 49,579.40/x
  3. Step 3: Cross multiply
    85,396.39x = 117,838.06 × 49,579.40
  4. Step 4: Simplify right side
    85,396.39x = 5,842,340,482.61
  5. Step 5: Solve for x
    x = 5,842,340,482.61/85,396.39
  6. Step 6: Final answer
    x = 68,414.38

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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.