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Finding the Fourth Proportional to 79,883.77, 110,705.62 and 78,756.25

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Solution

The fourth proportional to 79,883.77, 110,705.62 and 78,756.25 is: 109,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,883.77 : 110,705.62 = 78,756.25 : x
  2. Step 2: Convert to fraction form
    79,883.77/110,705.62 = 78,756.25/x
  3. Step 3: Cross multiply
    79,883.77x = 110,705.62 × 78,756.25
  4. Step 4: Simplify right side
    79,883.77x = 8,718,759,485.13
  5. Step 5: Solve for x
    x = 8,718,759,485.13/79,883.77
  6. Step 6: Final answer
    x = 109,143.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.