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Finding the Fourth Proportional to 78,095.35, 117,020.34 and 60,369.43

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Solution

The fourth proportional to 78,095.35, 117,020.34 and 60,369.43 is: 90,459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,095.35 : 117,020.34 = 60,369.43 : x
  2. Step 2: Convert to fraction form
    78,095.35/117,020.34 = 60,369.43/x
  3. Step 3: Cross multiply
    78,095.35x = 117,020.34 × 60,369.43
  4. Step 4: Simplify right side
    78,095.35x = 7,064,451,224.21
  5. Step 5: Solve for x
    x = 7,064,451,224.21/78,095.35
  6. Step 6: Final answer
    x = 90,459.31

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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.