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Finding the Fourth Proportional to 74,306.64, 111,457.08 and 18,904.08

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Solution

The fourth proportional to 74,306.64, 111,457.08 and 18,904.08 is: 28,355.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,306.64 : 111,457.08 = 18,904.08 : x
  2. Step 2: Convert to fraction form
    74,306.64/111,457.08 = 18,904.08/x
  3. Step 3: Cross multiply
    74,306.64x = 111,457.08 × 18,904.08
  4. Step 4: Simplify right side
    74,306.64x = 2,106,993,556.89
  5. Step 5: Solve for x
    x = 2,106,993,556.89/74,306.64
  6. Step 6: Final answer
    x = 28,355.39

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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.