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Finding the Fourth Proportional to 78,892.58, 118,339.91 and 26,302.08

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Solution

The fourth proportional to 78,892.58, 118,339.91 and 26,302.08 is: 39,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.58 : 118,339.91 = 26,302.08 : x
  2. Step 2: Convert to fraction form
    78,892.58/118,339.91 = 26,302.08/x
  3. Step 3: Cross multiply
    78,892.58x = 118,339.91 × 26,302.08
  4. Step 4: Simplify right side
    78,892.58x = 3,112,585,845.77
  5. Step 5: Solve for x
    x = 3,112,585,845.77/78,892.58
  6. Step 6: Final answer
    x = 39,453.47

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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.