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Finding the Fourth Proportional to 56,702.82, 78,263.78 and 43,930.74

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Solution

The fourth proportional to 56,702.82, 78,263.78 and 43,930.74 is: 60,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,702.82 : 78,263.78 = 43,930.74 : x
  2. Step 2: Convert to fraction form
    56,702.82/78,263.78 = 43,930.74/x
  3. Step 3: Cross multiply
    56,702.82x = 78,263.78 × 43,930.74
  4. Step 4: Simplify right side
    56,702.82x = 3,438,185,770.60
  5. Step 5: Solve for x
    x = 3,438,185,770.60/56,702.82
  6. Step 6: Final answer
    x = 60,635.18

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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.