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Finding the Fourth Proportional to 46,872.50, 70,309 and 19,170.50

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Solution

The fourth proportional to 46,872.50, 70,309 and 19,170.50 is: 28,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,872.50 : 70,309 = 19,170.50 : x
  2. Step 2: Convert to fraction form
    46,872.50/70,309 = 19,170.50/x
  3. Step 3: Cross multiply
    46,872.50x = 70,309 × 19,170.50
  4. Step 4: Simplify right side
    46,872.50x = 1,347,858,684.50
  5. Step 5: Solve for x
    x = 1,347,858,684.50/46,872.50
  6. Step 6: Final answer
    x = 28,755.85

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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.