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Finding the Fourth Proportional to 79,042.15, 109,080.98 and 45,055.77

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Solution

The fourth proportional to 79,042.15, 109,080.98 and 45,055.77 is: 62,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,042.15 : 109,080.98 = 45,055.77 : x
  2. Step 2: Convert to fraction form
    79,042.15/109,080.98 = 45,055.77/x
  3. Step 3: Cross multiply
    79,042.15x = 109,080.98 × 45,055.77
  4. Step 4: Simplify right side
    79,042.15x = 4,914,727,546.25
  5. Step 5: Solve for x
    x = 4,914,727,546.25/79,042.15
  6. Step 6: Final answer
    x = 62,178.57

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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.