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Finding the Fourth Proportional to 50,968, 70,339.44 and 28,612

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Solution

The fourth proportional to 50,968, 70,339.44 and 28,612 is: 39,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,968 : 70,339.44 = 28,612 : x
  2. Step 2: Convert to fraction form
    50,968/70,339.44 = 28,612/x
  3. Step 3: Cross multiply
    50,968x = 70,339.44 × 28,612
  4. Step 4: Simplify right side
    50,968x = 2,012,552,057.28
  5. Step 5: Solve for x
    x = 2,012,552,057.28/50,968
  6. Step 6: Final answer
    x = 39,486.58

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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.