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Finding the Fourth Proportional to 40,808.81, 61,246.13 and 21,093.01

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Solution

The fourth proportional to 40,808.81, 61,246.13 and 21,093.01 is: 31,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,808.81 : 61,246.13 = 21,093.01 : x
  2. Step 2: Convert to fraction form
    40,808.81/61,246.13 = 21,093.01/x
  3. Step 3: Cross multiply
    40,808.81x = 61,246.13 × 21,093.01
  4. Step 4: Simplify right side
    40,808.81x = 1,291,864,973.97
  5. Step 5: Solve for x
    x = 1,291,864,973.97/40,808.81
  6. Step 6: Final answer
    x = 31,656.52

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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.