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Finding the Fourth Proportional to 51,293, 70,784.44 and 28,937

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Solution

The fourth proportional to 51,293, 70,784.44 and 28,937 is: 39,933.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,293 : 70,784.44 = 28,937 : x
  2. Step 2: Convert to fraction form
    51,293/70,784.44 = 28,937/x
  3. Step 3: Cross multiply
    51,293x = 70,784.44 × 28,937
  4. Step 4: Simplify right side
    51,293x = 2,048,289,340.28
  5. Step 5: Solve for x
    x = 2,048,289,340.28/51,293
  6. Step 6: Final answer
    x = 39,933.12

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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.