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Finding the Fourth Proportional to 74,702.49, 103,086.45 and 40,710.27

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Solution

The fourth proportional to 74,702.49, 103,086.45 and 40,710.27 is: 56,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.49 : 103,086.45 = 40,710.27 : x
  2. Step 2: Convert to fraction form
    74,702.49/103,086.45 = 40,710.27/x
  3. Step 3: Cross multiply
    74,702.49x = 103,086.45 × 40,710.27
  4. Step 4: Simplify right side
    74,702.49x = 4,196,677,212.84
  5. Step 5: Solve for x
    x = 4,196,677,212.84/74,702.49
  6. Step 6: Final answer
    x = 56,178.55

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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.