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Finding the Fourth Proportional to 66,670.19, 100,008.94 and 19,926.71

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Solution

The fourth proportional to 66,670.19, 100,008.94 and 19,926.71 is: 29,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,670.19 : 100,008.94 = 19,926.71 : x
  2. Step 2: Convert to fraction form
    66,670.19/100,008.94 = 19,926.71/x
  3. Step 3: Cross multiply
    66,670.19x = 100,008.94 × 19,926.71
  4. Step 4: Simplify right side
    66,670.19x = 1,992,849,144.79
  5. Step 5: Solve for x
    x = 1,992,849,144.79/66,670.19
  6. Step 6: Final answer
    x = 29,891.16

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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.