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Finding the Fourth Proportional to 76,077.76, 104,979.24 and 42,080.86

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Solution

The fourth proportional to 76,077.76, 104,979.24 and 42,080.86 is: 58,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,077.76 : 104,979.24 = 42,080.86 : x
  2. Step 2: Convert to fraction form
    76,077.76/104,979.24 = 42,080.86/x
  3. Step 3: Cross multiply
    76,077.76x = 104,979.24 × 42,080.86
  4. Step 4: Simplify right side
    76,077.76x = 4,417,616,701.35
  5. Step 5: Solve for x
    x = 4,417,616,701.35/76,077.76
  6. Step 6: Final answer
    x = 58,067.12

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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.