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Finding the Fourth Proportional to 76,264, 105,250.80 and 42,736.48

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Solution

The fourth proportional to 76,264, 105,250.80 and 42,736.48 is: 58,979.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,264 : 105,250.80 = 42,736.48 : x
  2. Step 2: Convert to fraction form
    76,264/105,250.80 = 42,736.48/x
  3. Step 3: Cross multiply
    76,264x = 105,250.80 × 42,736.48
  4. Step 4: Simplify right side
    76,264x = 4,498,048,709.18
  5. Step 5: Solve for x
    x = 4,498,048,709.18/76,264
  6. Step 6: Final answer
    x = 58,979.97

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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.