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Finding the Fourth Proportional to 77,630.64, 116,445.96 and 61,974.96

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Solution

The fourth proportional to 77,630.64, 116,445.96 and 61,974.96 is: 92,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.64 : 116,445.96 = 61,974.96 : x
  2. Step 2: Convert to fraction form
    77,630.64/116,445.96 = 61,974.96/x
  3. Step 3: Cross multiply
    77,630.64x = 116,445.96 × 61,974.96
  4. Step 4: Simplify right side
    77,630.64x = 7,216,733,713.16
  5. Step 5: Solve for x
    x = 7,216,733,713.16/77,630.64
  6. Step 6: Final answer
    x = 92,962.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.