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Finding the Fourth Proportional to 60,672.26, 91,008.40 and 19,122.50

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Solution

The fourth proportional to 60,672.26, 91,008.40 and 19,122.50 is: 28,683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,672.26 : 91,008.40 = 19,122.50 : x
  2. Step 2: Convert to fraction form
    60,672.26/91,008.40 = 19,122.50/x
  3. Step 3: Cross multiply
    60,672.26x = 91,008.40 × 19,122.50
  4. Step 4: Simplify right side
    60,672.26x = 1,740,308,129
  5. Step 5: Solve for x
    x = 1,740,308,129/60,672.26
  6. Step 6: Final answer
    x = 28,683.75

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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.