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Finding the Fourth Proportional to 71,075.57, 98,083.10 and 39,243.65

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Solution

The fourth proportional to 71,075.57, 98,083.10 and 39,243.65 is: 54,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,075.57 : 98,083.10 = 39,243.65 : x
  2. Step 2: Convert to fraction form
    71,075.57/98,083.10 = 39,243.65/x
  3. Step 3: Cross multiply
    71,075.57x = 98,083.10 × 39,243.65
  4. Step 4: Simplify right side
    71,075.57x = 3,849,138,455.01
  5. Step 5: Solve for x
    x = 3,849,138,455.01/71,075.57
  6. Step 6: Final answer
    x = 54,155.58

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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.