Home / 65,075.12-97,640.66-20,705.48

Finding the Fourth Proportional to 65,075.12, 97,640.66 and 20,705.48

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Solution

The fourth proportional to 65,075.12, 97,640.66 and 20,705.48 is: 31,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,075.12 : 97,640.66 = 20,705.48 : x
  2. Step 2: Convert to fraction form
    65,075.12/97,640.66 = 20,705.48/x
  3. Step 3: Cross multiply
    65,075.12x = 97,640.66 × 20,705.48
  4. Step 4: Simplify right side
    65,075.12x = 2,021,696,732.82
  5. Step 5: Solve for x
    x = 2,021,696,732.82/65,075.12
  6. Step 6: Final answer
    x = 31,067.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.