Home / 78,049.14-117,074.01-18,884.72

Finding the Fourth Proportional to 78,049.14, 117,074.01 and 18,884.72

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Solution

The fourth proportional to 78,049.14, 117,074.01 and 18,884.72 is: 28,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,049.14 : 117,074.01 = 18,884.72 : x
  2. Step 2: Convert to fraction form
    78,049.14/117,074.01 = 18,884.72/x
  3. Step 3: Cross multiply
    78,049.14x = 117,074.01 × 18,884.72
  4. Step 4: Simplify right side
    78,049.14x = 2,210,909,312.76
  5. Step 5: Solve for x
    x = 2,210,909,312.76/78,049.14
  6. Step 6: Final answer
    x = 28,327.15

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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.