Home / 78,766.05-118,166.70-28,845.15

Finding the Fourth Proportional to 78,766.05, 118,166.70 and 28,845.15

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Solution

The fourth proportional to 78,766.05, 118,166.70 and 28,845.15 is: 43,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,766.05 : 118,166.70 = 28,845.15 : x
  2. Step 2: Convert to fraction form
    78,766.05/118,166.70 = 28,845.15/x
  3. Step 3: Cross multiply
    78,766.05x = 118,166.70 × 28,845.15
  4. Step 4: Simplify right side
    78,766.05x = 3,408,536,186.51
  5. Step 5: Solve for x
    x = 3,408,536,186.51/78,766.05
  6. Step 6: Final answer
    x = 43,274.18

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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.