Home / 78,063.23-117,095.15-18,898.81

Finding the Fourth Proportional to 78,063.23, 117,095.15 and 18,898.81

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Solution

The fourth proportional to 78,063.23, 117,095.15 and 18,898.81 is: 28,348.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,063.23 : 117,095.15 = 18,898.81 : x
  2. Step 2: Convert to fraction form
    78,063.23/117,095.15 = 18,898.81/x
  3. Step 3: Cross multiply
    78,063.23x = 117,095.15 × 18,898.81
  4. Step 4: Simplify right side
    78,063.23x = 2,212,958,991.77
  5. Step 5: Solve for x
    x = 2,212,958,991.77/78,063.23
  6. Step 6: Final answer
    x = 28,348.29

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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.