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Finding the Fourth Proportional to 78,899.94, 118,324.35 and 26,295.30

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Solution

The fourth proportional to 78,899.94, 118,324.35 and 26,295.30 is: 39,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899.94 : 118,324.35 = 26,295.30 : x
  2. Step 2: Convert to fraction form
    78,899.94/118,324.35 = 26,295.30/x
  3. Step 3: Cross multiply
    78,899.94x = 118,324.35 × 26,295.30
  4. Step 4: Simplify right side
    78,899.94x = 3,111,374,280.56
  5. Step 5: Solve for x
    x = 3,111,374,280.56/78,899.94
  6. Step 6: Final answer
    x = 39,434.43

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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.