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Finding the Fourth Proportional to 92,018.78, 126,984.70 and 51,182.63

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Solution

The fourth proportional to 92,018.78, 126,984.70 and 51,182.63 is: 70,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,018.78 : 126,984.70 = 51,182.63 : x
  2. Step 2: Convert to fraction form
    92,018.78/126,984.70 = 51,182.63/x
  3. Step 3: Cross multiply
    92,018.78x = 126,984.70 × 51,182.63
  4. Step 4: Simplify right side
    92,018.78x = 6,499,411,361.18
  5. Step 5: Solve for x
    x = 6,499,411,361.18/92,018.78
  6. Step 6: Final answer
    x = 70,631.36

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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.