Home / 74,000.79-111,003.21-21,412.35

Finding the Fourth Proportional to 74,000.79, 111,003.21 and 21,412.35

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Solution

The fourth proportional to 74,000.79, 111,003.21 and 21,412.35 is: 32,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,000.79 : 111,003.21 = 21,412.35 : x
  2. Step 2: Convert to fraction form
    74,000.79/111,003.21 = 21,412.35/x
  3. Step 3: Cross multiply
    74,000.79x = 111,003.21 × 21,412.35
  4. Step 4: Simplify right side
    74,000.79x = 2,376,839,583.64
  5. Step 5: Solve for x
    x = 2,376,839,583.64/74,000.79
  6. Step 6: Final answer
    x = 32,119.11

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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.