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Finding the Fourth Proportional to 60,774.94, 91,161.87 and 21,322.81

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Solution

The fourth proportional to 60,774.94, 91,161.87 and 21,322.81 is: 31,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,774.94 : 91,161.87 = 21,322.81 : x
  2. Step 2: Convert to fraction form
    60,774.94/91,161.87 = 21,322.81/x
  3. Step 3: Cross multiply
    60,774.94x = 91,161.87 × 21,322.81
  4. Step 4: Simplify right side
    60,774.94x = 1,943,827,233.25
  5. Step 5: Solve for x
    x = 1,943,827,233.25/60,774.94
  6. Step 6: Final answer
    x = 31,984.03

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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.