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Finding the Fourth Proportional to 66,712.44, 100,075.65 and 21,737.29

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Solution

The fourth proportional to 66,712.44, 100,075.65 and 21,737.29 is: 32,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,712.44 : 100,075.65 = 21,737.29 : x
  2. Step 2: Convert to fraction form
    66,712.44/100,075.65 = 21,737.29/x
  3. Step 3: Cross multiply
    66,712.44x = 100,075.65 × 21,737.29
  4. Step 4: Simplify right side
    66,712.44x = 2,175,373,317.30
  5. Step 5: Solve for x
    x = 2,175,373,317.30/66,712.44
  6. Step 6: Final answer
    x = 32,608.21

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1.5x scale

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.