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Finding the Fourth Proportional to 50,640.40, 69,877.72 and 27,978.02

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Solution

The fourth proportional to 50,640.40, 69,877.72 and 27,978.02 is: 38,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,640.40 : 69,877.72 = 27,978.02 : x
  2. Step 2: Convert to fraction form
    50,640.40/69,877.72 = 27,978.02/x
  3. Step 3: Cross multiply
    50,640.40x = 69,877.72 × 27,978.02
  4. Step 4: Simplify right side
    50,640.40x = 1,955,040,247.71
  5. Step 5: Solve for x
    x = 1,955,040,247.71/50,640.40
  6. Step 6: Final answer
    x = 38,606.34

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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.