Home / 78,063.20-117,095.07-18,898.78

Finding the Fourth Proportional to 78,063.20, 117,095.07 and 18,898.78

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Solution

The fourth proportional to 78,063.20, 117,095.07 and 18,898.78 is: 28,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,063.20 : 117,095.07 = 18,898.78 : x
  2. Step 2: Convert to fraction form
    78,063.20/117,095.07 = 18,898.78/x
  3. Step 3: Cross multiply
    78,063.20x = 117,095.07 × 18,898.78
  4. Step 4: Simplify right side
    78,063.20x = 2,212,953,967.01
  5. Step 5: Solve for x
    x = 2,212,953,967.01/78,063.20
  6. Step 6: Final answer
    x = 28,348.24

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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.