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Finding the Fourth Proportional to 50,702.74, 69,967.02 and 28,040.40

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Solution

The fourth proportional to 50,702.74, 69,967.02 and 28,040.40 is: 38,694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,702.74 : 69,967.02 = 28,040.40 : x
  2. Step 2: Convert to fraction form
    50,702.74/69,967.02 = 28,040.40/x
  3. Step 3: Cross multiply
    50,702.74x = 69,967.02 × 28,040.40
  4. Step 4: Simplify right side
    50,702.74x = 1,961,903,402.53
  5. Step 5: Solve for x
    x = 1,961,903,402.53/50,702.74
  6. Step 6: Final answer
    x = 38,694.23

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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.