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Finding the Fourth Proportional to 50,637.76, 69,879.76 and 27,978.28

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Solution

The fourth proportional to 50,637.76, 69,879.76 and 27,978.28 is: 38,609.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,637.76 : 69,879.76 = 27,978.28 : x
  2. Step 2: Convert to fraction form
    50,637.76/69,879.76 = 27,978.28/x
  3. Step 3: Cross multiply
    50,637.76x = 69,879.76 × 27,978.28
  4. Step 4: Simplify right side
    50,637.76x = 1,955,115,491.61
  5. Step 5: Solve for x
    x = 1,955,115,491.61/50,637.76
  6. Step 6: Final answer
    x = 38,609.83

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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.