Home / 78,062.23-117,093.65-18,897.81

Finding the Fourth Proportional to 78,062.23, 117,093.65 and 18,897.81

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Solution

The fourth proportional to 78,062.23, 117,093.65 and 18,897.81 is: 28,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.23 : 117,093.65 = 18,897.81 : x
  2. Step 2: Convert to fraction form
    78,062.23/117,093.65 = 18,897.81/x
  3. Step 3: Cross multiply
    78,062.23x = 117,093.65 × 18,897.81
  4. Step 4: Simplify right side
    78,062.23x = 2,212,812,869.95
  5. Step 5: Solve for x
    x = 2,212,812,869.95/78,062.23
  6. Step 6: Final answer
    x = 28,346.78

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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.