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Finding the Fourth Proportional to 51,391.40, 70,839.72 and 47,267.37

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Solution

The fourth proportional to 51,391.40, 70,839.72 and 47,267.37 is: 65,155.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,391.40 : 70,839.72 = 47,267.37 : x
  2. Step 2: Convert to fraction form
    51,391.40/70,839.72 = 47,267.37/x
  3. Step 3: Cross multiply
    51,391.40x = 70,839.72 × 47,267.37
  4. Step 4: Simplify right side
    51,391.40x = 3,348,407,255.94
  5. Step 5: Solve for x
    x = 3,348,407,255.94/51,391.40
  6. Step 6: Final answer
    x = 65,155.02

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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.