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Finding the Fourth Proportional to 71,075.76, 98,081.93 and 39,243.98

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Solution

The fourth proportional to 71,075.76, 98,081.93 and 39,243.98 is: 54,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,075.76 : 98,081.93 = 39,243.98 : x
  2. Step 2: Convert to fraction form
    71,075.76/98,081.93 = 39,243.98/x
  3. Step 3: Cross multiply
    71,075.76x = 98,081.93 × 39,243.98
  4. Step 4: Simplify right side
    71,075.76x = 3,849,124,612.65
  5. Step 5: Solve for x
    x = 3,849,124,612.65/71,075.76
  6. Step 6: Final answer
    x = 54,155.24

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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.