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Finding the Fourth Proportional to 92,178.88, 127,216.38 and 56,392.68

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Solution

The fourth proportional to 92,178.88, 127,216.38 and 56,392.68 is: 77,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,178.88 : 127,216.38 = 56,392.68 : x
  2. Step 2: Convert to fraction form
    92,178.88/127,216.38 = 56,392.68/x
  3. Step 3: Cross multiply
    92,178.88x = 127,216.38 × 56,392.68
  4. Step 4: Simplify right side
    92,178.88x = 7,174,072,608.10
  5. Step 5: Solve for x
    x = 7,174,072,608.10/92,178.88
  6. Step 6: Final answer
    x = 77,827.73

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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.