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Finding the Fourth Proportional to 46,512.40, 69,768.60 and 18,810.40

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Solution

The fourth proportional to 46,512.40, 69,768.60 and 18,810.40 is: 28,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,512.40 : 69,768.60 = 18,810.40 : x
  2. Step 2: Convert to fraction form
    46,512.40/69,768.60 = 18,810.40/x
  3. Step 3: Cross multiply
    46,512.40x = 69,768.60 × 18,810.40
  4. Step 4: Simplify right side
    46,512.40x = 1,312,375,273.44
  5. Step 5: Solve for x
    x = 1,312,375,273.44/46,512.40
  6. Step 6: Final answer
    x = 28,215.60

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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.