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Finding the Fourth Proportional to 92,647.34, 138,950.04 and 55,218.05

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Solution

The fourth proportional to 92,647.34, 138,950.04 and 55,218.05 is: 82,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,647.34 : 138,950.04 = 55,218.05 : x
  2. Step 2: Convert to fraction form
    92,647.34/138,950.04 = 55,218.05/x
  3. Step 3: Cross multiply
    92,647.34x = 138,950.04 × 55,218.05
  4. Step 4: Simplify right side
    92,647.34x = 7,672,550,256.22
  5. Step 5: Solve for x
    x = 7,672,550,256.22/92,647.34
  6. Step 6: Final answer
    x = 82,814.58

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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.