Home / 78,004.10-117,006.15-46,511.30

Finding the Fourth Proportional to 78,004.10, 117,006.15 and 46,511.30

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Solution

The fourth proportional to 78,004.10, 117,006.15 and 46,511.30 is: 69,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.10 : 117,006.15 = 46,511.30 : x
  2. Step 2: Convert to fraction form
    78,004.10/117,006.15 = 46,511.30/x
  3. Step 3: Cross multiply
    78,004.10x = 117,006.15 × 46,511.30
  4. Step 4: Simplify right side
    78,004.10x = 5,442,108,144.50
  5. Step 5: Solve for x
    x = 5,442,108,144.50/78,004.10
  6. Step 6: Final answer
    x = 69,766.95

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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.