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Finding the Fourth Proportional to 78,626.70, 108,541.62 and 50,348.52

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Solution

The fourth proportional to 78,626.70, 108,541.62 and 50,348.52 is: 69,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,626.70 : 108,541.62 = 50,348.52 : x
  2. Step 2: Convert to fraction form
    78,626.70/108,541.62 = 50,348.52/x
  3. Step 3: Cross multiply
    78,626.70x = 108,541.62 × 50,348.52
  4. Step 4: Simplify right side
    78,626.70x = 5,464,909,925.40
  5. Step 5: Solve for x
    x = 5,464,909,925.40/78,626.70
  6. Step 6: Final answer
    x = 69,504.51

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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.