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Finding the Fourth Proportional to 62,673, 94,014.36 and 21,120

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Solution

The fourth proportional to 62,673, 94,014.36 and 21,120 is: 31,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,673 : 94,014.36 = 21,120 : x
  2. Step 2: Convert to fraction form
    62,673/94,014.36 = 21,120/x
  3. Step 3: Cross multiply
    62,673x = 94,014.36 × 21,120
  4. Step 4: Simplify right side
    62,673x = 1,985,583,283.20
  5. Step 5: Solve for x
    x = 1,985,583,283.20/62,673
  6. Step 6: Final answer
    x = 31,681.64

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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.