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Finding the Fourth Proportional to 66,325.88, 99,503.14 and 21,950.40

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Solution

The fourth proportional to 66,325.88, 99,503.14 and 21,950.40 is: 32,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,325.88 : 99,503.14 = 21,950.40 : x
  2. Step 2: Convert to fraction form
    66,325.88/99,503.14 = 21,950.40/x
  3. Step 3: Cross multiply
    66,325.88x = 99,503.14 × 21,950.40
  4. Step 4: Simplify right side
    66,325.88x = 2,184,133,724.26
  5. Step 5: Solve for x
    x = 2,184,133,724.26/66,325.88
  6. Step 6: Final answer
    x = 32,930.34

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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.