Home / 66,075.84-99,120.24-21,702.72

Finding the Fourth Proportional to 66,075.84, 99,120.24 and 21,702.72

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Solution

The fourth proportional to 66,075.84, 99,120.24 and 21,702.72 is: 32,556.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,075.84 : 99,120.24 = 21,702.72 : x
  2. Step 2: Convert to fraction form
    66,075.84/99,120.24 = 21,702.72/x
  3. Step 3: Cross multiply
    66,075.84x = 99,120.24 × 21,702.72
  4. Step 4: Simplify right side
    66,075.84x = 2,151,178,815.05
  5. Step 5: Solve for x
    x = 2,151,178,815.05/66,075.84
  6. Step 6: Final answer
    x = 32,556.21

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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.