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Finding the Fourth Proportional to 78,791.18, 118,187.80 and 26,200.67

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Solution

The fourth proportional to 78,791.18, 118,187.80 and 26,200.67 is: 39,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,791.18 : 118,187.80 = 26,200.67 : x
  2. Step 2: Convert to fraction form
    78,791.18/118,187.80 = 26,200.67/x
  3. Step 3: Cross multiply
    78,791.18x = 118,187.80 × 26,200.67
  4. Step 4: Simplify right side
    78,791.18x = 3,096,599,545.83
  5. Step 5: Solve for x
    x = 3,096,599,545.83/78,791.18
  6. Step 6: Final answer
    x = 39,301.35

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1.5x scale

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.