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Finding the Fourth Proportional to 66,326.88, 99,504.64 and 21,951.40

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Solution

The fourth proportional to 66,326.88, 99,504.64 and 21,951.40 is: 32,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,326.88 : 99,504.64 = 21,951.40 : x
  2. Step 2: Convert to fraction form
    66,326.88/99,504.64 = 21,951.40/x
  3. Step 3: Cross multiply
    66,326.88x = 99,504.64 × 21,951.40
  4. Step 4: Simplify right side
    66,326.88x = 2,184,266,154.50
  5. Step 5: Solve for x
    x = 2,184,266,154.50/66,326.88
  6. Step 6: Final answer
    x = 32,931.84

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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.