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Finding the Fourth Proportional to 51,908.30, 72,868.45 and 51,908.30

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Solution

The fourth proportional to 51,908.30, 72,868.45 and 51,908.30 is: 72,868.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,908.30 : 72,868.45 = 51,908.30 : x
  2. Step 2: Convert to fraction form
    51,908.30/72,868.45 = 51,908.30/x
  3. Step 3: Cross multiply
    51,908.30x = 72,868.45 × 51,908.30
  4. Step 4: Simplify right side
    51,908.30x = 3,782,477,363.14
  5. Step 5: Solve for x
    x = 3,782,477,363.14/51,908.30
  6. Step 6: Final answer
    x = 72,868.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.