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Finding the Fourth Proportional to 51,838.67, 71,571.80 and 39,880.91

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Solution

The fourth proportional to 51,838.67, 71,571.80 and 39,880.91 is: 55,062.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,838.67 : 71,571.80 = 39,880.91 : x
  2. Step 2: Convert to fraction form
    51,838.67/71,571.80 = 39,880.91/x
  3. Step 3: Cross multiply
    51,838.67x = 71,571.80 × 39,880.91
  4. Step 4: Simplify right side
    51,838.67x = 2,854,348,314.93
  5. Step 5: Solve for x
    x = 2,854,348,314.93/51,838.67
  6. Step 6: Final answer
    x = 55,062.14

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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.