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Finding the Fourth Proportional to 92,360.78, 138,333.56 and 56,239.39

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Solution

The fourth proportional to 92,360.78, 138,333.56 and 56,239.39 is: 84,232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,360.78 : 138,333.56 = 56,239.39 : x
  2. Step 2: Convert to fraction form
    92,360.78/138,333.56 = 56,239.39/x
  3. Step 3: Cross multiply
    92,360.78x = 138,333.56 × 56,239.39
  4. Step 4: Simplify right side
    92,360.78x = 7,779,794,922.65
  5. Step 5: Solve for x
    x = 7,779,794,922.65/92,360.78
  6. Step 6: Final answer
    x = 84,232.67

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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.