Home / 66,114.99-99,184.55-21,142.49

Finding the Fourth Proportional to 66,114.99, 99,184.55 and 21,142.49

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Solution

The fourth proportional to 66,114.99, 99,184.55 and 21,142.49 is: 31,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,114.99 : 99,184.55 = 21,142.49 : x
  2. Step 2: Convert to fraction form
    66,114.99/99,184.55 = 21,142.49/x
  3. Step 3: Cross multiply
    66,114.99x = 99,184.55 × 21,142.49
  4. Step 4: Simplify right side
    66,114.99x = 2,097,007,754.89
  5. Step 5: Solve for x
    x = 2,097,007,754.89/66,114.99
  6. Step 6: Final answer
    x = 31,717.58

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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.