Home / 78,277.10-117,319.43-36,098.63

Finding the Fourth Proportional to 78,277.10, 117,319.43 and 36,098.63

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Solution

The fourth proportional to 78,277.10, 117,319.43 and 36,098.63 is: 54,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,277.10 : 117,319.43 = 36,098.63 : x
  2. Step 2: Convert to fraction form
    78,277.10/117,319.43 = 36,098.63/x
  3. Step 3: Cross multiply
    78,277.10x = 117,319.43 × 36,098.63
  4. Step 4: Simplify right side
    78,277.10x = 4,235,069,928.29
  5. Step 5: Solve for x
    x = 4,235,069,928.29/78,277.10
  6. Step 6: Final answer
    x = 54,103.56

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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.