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Finding the Fourth Proportional to 92,676.80, 138,963.36 and 30,342.08

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Solution

The fourth proportional to 92,676.80, 138,963.36 and 30,342.08 is: 45,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,676.80 : 138,963.36 = 30,342.08 : x
  2. Step 2: Convert to fraction form
    92,676.80/138,963.36 = 30,342.08/x
  3. Step 3: Cross multiply
    92,676.80x = 138,963.36 × 30,342.08
  4. Step 4: Simplify right side
    92,676.80x = 4,216,437,386.19
  5. Step 5: Solve for x
    x = 4,216,437,386.19/92,676.80
  6. Step 6: Final answer
    x = 45,496.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.