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Finding the Fourth Proportional to 69,284, 95,621.28 and 39,075.52

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Solution

The fourth proportional to 69,284, 95,621.28 and 39,075.52 is: 53,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,284 : 95,621.28 = 39,075.52 : x
  2. Step 2: Convert to fraction form
    69,284/95,621.28 = 39,075.52/x
  3. Step 3: Cross multiply
    69,284x = 95,621.28 × 39,075.52
  4. Step 4: Simplify right side
    69,284x = 3,736,451,239.07
  5. Step 5: Solve for x
    x = 3,736,451,239.07/69,284
  6. Step 6: Final answer
    x = 53,929.50

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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.