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Finding the Fourth Proportional to 51,990.80, 71,747.07 and 28,117.49

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Solution

The fourth proportional to 51,990.80, 71,747.07 and 28,117.49 is: 38,802.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,990.80 : 71,747.07 = 28,117.49 : x
  2. Step 2: Convert to fraction form
    51,990.80/71,747.07 = 28,117.49/x
  3. Step 3: Cross multiply
    51,990.80x = 71,747.07 × 28,117.49
  4. Step 4: Simplify right side
    51,990.80x = 2,017,347,523.25
  5. Step 5: Solve for x
    x = 2,017,347,523.25/51,990.80
  6. Step 6: Final answer
    x = 38,802.01

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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.