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Finding the Fourth Proportional to 74,172.46, 111,282.46 and 21,585.10

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Solution

The fourth proportional to 74,172.46, 111,282.46 and 21,585.10 is: 32,384.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.46 : 111,282.46 = 21,585.10 : x
  2. Step 2: Convert to fraction form
    74,172.46/111,282.46 = 21,585.10/x
  3. Step 3: Cross multiply
    74,172.46x = 111,282.46 × 21,585.10
  4. Step 4: Simplify right side
    74,172.46x = 2,402,043,027.35
  5. Step 5: Solve for x
    x = 2,402,043,027.35/74,172.46
  6. Step 6: Final answer
    x = 32,384.57

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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.