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Finding the Fourth Proportional to 70,954.74, 106,452.63 and 21,036.06

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Solution

The fourth proportional to 70,954.74, 106,452.63 and 21,036.06 is: 31,560.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.74 : 106,452.63 = 21,036.06 : x
  2. Step 2: Convert to fraction form
    70,954.74/106,452.63 = 21,036.06/x
  3. Step 3: Cross multiply
    70,954.74x = 106,452.63 × 21,036.06
  4. Step 4: Simplify right side
    70,954.74x = 2,239,343,911.84
  5. Step 5: Solve for x
    x = 2,239,343,911.84/70,954.74
  6. Step 6: Final answer
    x = 31,560.17

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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.