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Finding the Fourth Proportional to 42,940.53, 64,415.21 and 14,860.53

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Solution

The fourth proportional to 42,940.53, 64,415.21 and 14,860.53 is: 22,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,940.53 : 64,415.21 = 14,860.53 : x
  2. Step 2: Convert to fraction form
    42,940.53/64,415.21 = 14,860.53/x
  3. Step 3: Cross multiply
    42,940.53x = 64,415.21 × 14,860.53
  4. Step 4: Simplify right side
    42,940.53x = 957,244,284.55
  5. Step 5: Solve for x
    x = 957,244,284.55/42,940.53
  6. Step 6: Final answer
    x = 22,292.33

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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.