Home / 66,632.63-99,964.73-19,886.72

Finding the Fourth Proportional to 66,632.63, 99,964.73 and 19,886.72

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Solution

The fourth proportional to 66,632.63, 99,964.73 and 19,886.72 is: 29,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.63 : 99,964.73 = 19,886.72 : x
  2. Step 2: Convert to fraction form
    66,632.63/99,964.73 = 19,886.72/x
  3. Step 3: Cross multiply
    66,632.63x = 99,964.73 × 19,886.72
  4. Step 4: Simplify right side
    66,632.63x = 1,987,970,145.28
  5. Step 5: Solve for x
    x = 1,987,970,145.28/66,632.63
  6. Step 6: Final answer
    x = 29,834.79

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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.