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Finding the Fourth Proportional to 60,750.42, 91,126.44 and 21,308.68

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Solution

The fourth proportional to 60,750.42, 91,126.44 and 21,308.68 is: 31,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,750.42 : 91,126.44 = 21,308.68 : x
  2. Step 2: Convert to fraction form
    60,750.42/91,126.44 = 21,308.68/x
  3. Step 3: Cross multiply
    60,750.42x = 91,126.44 × 21,308.68
  4. Step 4: Simplify right side
    60,750.42x = 1,941,784,149.50
  5. Step 5: Solve for x
    x = 1,941,784,149.50/60,750.42
  6. Step 6: Final answer
    x = 31,963.30

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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.