Home / 78,278.21-108,034.10-43,836.05

Finding the Fourth Proportional to 78,278.21, 108,034.10 and 43,836.05

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Solution

The fourth proportional to 78,278.21, 108,034.10 and 43,836.05 is: 60,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278.21 : 108,034.10 = 43,836.05 : x
  2. Step 2: Convert to fraction form
    78,278.21/108,034.10 = 43,836.05/x
  3. Step 3: Cross multiply
    78,278.21x = 108,034.10 × 43,836.05
  4. Step 4: Simplify right side
    78,278.21x = 4,735,788,588.98
  5. Step 5: Solve for x
    x = 4,735,788,588.98/78,278.21
  6. Step 6: Final answer
    x = 60,499.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.