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Finding the Fourth Proportional to 68,830.40, 94,994.40 and 41,981.12

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Solution

The fourth proportional to 68,830.40, 94,994.40 and 41,981.12 is: 57,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,830.40 : 94,994.40 = 41,981.12 : x
  2. Step 2: Convert to fraction form
    68,830.40/94,994.40 = 41,981.12/x
  3. Step 3: Cross multiply
    68,830.40x = 94,994.40 × 41,981.12
  4. Step 4: Simplify right side
    68,830.40x = 3,987,971,305.73
  5. Step 5: Solve for x
    x = 3,987,971,305.73/68,830.40
  6. Step 6: Final answer
    x = 57,939.10

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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.