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Finding the Fourth Proportional to 78,647.61, 108,536.31 and 44,657.58

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Solution

The fourth proportional to 78,647.61, 108,536.31 and 44,657.58 is: 61,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,647.61 : 108,536.31 = 44,657.58 : x
  2. Step 2: Convert to fraction form
    78,647.61/108,536.31 = 44,657.58/x
  3. Step 3: Cross multiply
    78,647.61x = 108,536.31 × 44,657.58
  4. Step 4: Simplify right side
    78,647.61x = 4,846,968,946.73
  5. Step 5: Solve for x
    x = 4,846,968,946.73/78,647.61
  6. Step 6: Final answer
    x = 61,628.94

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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.