Home / 78,876.57-118,474.07-47,346.51

Finding the Fourth Proportional to 78,876.57, 118,474.07 and 47,346.51

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Solution

The fourth proportional to 78,876.57, 118,474.07 and 47,346.51 is: 71,115.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,876.57 : 118,474.07 = 47,346.51 : x
  2. Step 2: Convert to fraction form
    78,876.57/118,474.07 = 47,346.51/x
  3. Step 3: Cross multiply
    78,876.57x = 118,474.07 × 47,346.51
  4. Step 4: Simplify right side
    78,876.57x = 5,609,333,503.26
  5. Step 5: Solve for x
    x = 5,609,333,503.26/78,876.57
  6. Step 6: Final answer
    x = 71,115.33

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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.