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Finding the Fourth Proportional to 73,568.99, 110,335.26 and 20,978.93

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Solution

The fourth proportional to 73,568.99, 110,335.26 and 20,978.93 is: 31,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,568.99 : 110,335.26 = 20,978.93 : x
  2. Step 2: Convert to fraction form
    73,568.99/110,335.26 = 20,978.93/x
  3. Step 3: Cross multiply
    73,568.99x = 110,335.26 × 20,978.93
  4. Step 4: Simplify right side
    73,568.99x = 2,314,715,696.07
  5. Step 5: Solve for x
    x = 2,314,715,696.07/73,568.99
  6. Step 6: Final answer
    x = 31,463.20

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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.