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Finding the Fourth Proportional to 77,755.97, 107,311.95 and 43,772.82

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Solution

The fourth proportional to 77,755.97, 107,311.95 and 43,772.82 is: 60,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,755.97 : 107,311.95 = 43,772.82 : x
  2. Step 2: Convert to fraction form
    77,755.97/107,311.95 = 43,772.82/x
  3. Step 3: Cross multiply
    77,755.97x = 107,311.95 × 43,772.82
  4. Step 4: Simplify right side
    77,755.97x = 4,697,346,671.20
  5. Step 5: Solve for x
    x = 4,697,346,671.20/77,755.97
  6. Step 6: Final answer
    x = 60,411.40

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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.