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Finding the Fourth Proportional to 78,630.66, 108,508.32 and 45,094.50

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Solution

The fourth proportional to 78,630.66, 108,508.32 and 45,094.50 is: 62,229.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,630.66 : 108,508.32 = 45,094.50 : x
  2. Step 2: Convert to fraction form
    78,630.66/108,508.32 = 45,094.50/x
  3. Step 3: Cross multiply
    78,630.66x = 108,508.32 × 45,094.50
  4. Step 4: Simplify right side
    78,630.66x = 4,893,128,436.24
  5. Step 5: Solve for x
    x = 4,893,128,436.24/78,630.66
  6. Step 6: Final answer
    x = 62,229.27

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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.