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Finding the Fourth Proportional to 51,239.25, 70,710.17 and 28,883.25

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Solution

The fourth proportional to 51,239.25, 70,710.17 and 28,883.25 is: 39,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.25 : 70,710.17 = 28,883.25 : x
  2. Step 2: Convert to fraction form
    51,239.25/70,710.17 = 28,883.25/x
  3. Step 3: Cross multiply
    51,239.25x = 70,710.17 × 28,883.25
  4. Step 4: Simplify right side
    51,239.25x = 2,042,339,373.24
  5. Step 5: Solve for x
    x = 2,042,339,373.24/51,239.25
  6. Step 6: Final answer
    x = 39,858.89

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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.