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Finding the Fourth Proportional to 49,560, 68,401.44 and 28,340.16

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Solution

The fourth proportional to 49,560, 68,401.44 and 28,340.16 is: 39,114.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,560 : 68,401.44 = 28,340.16 : x
  2. Step 2: Convert to fraction form
    49,560/68,401.44 = 28,340.16/x
  3. Step 3: Cross multiply
    49,560x = 68,401.44 × 28,340.16
  4. Step 4: Simplify right side
    49,560x = 1,938,507,753.83
  5. Step 5: Solve for x
    x = 1,938,507,753.83/49,560
  6. Step 6: Final answer
    x = 39,114.36

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1.5x scale

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.