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Finding the Fourth Proportional to 40,671.54, 61,016.88 and 12,969.54

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Solution

The fourth proportional to 40,671.54, 61,016.88 and 12,969.54 is: 19,457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,671.54 : 61,016.88 = 12,969.54 : x
  2. Step 2: Convert to fraction form
    40,671.54/61,016.88 = 12,969.54/x
  3. Step 3: Cross multiply
    40,671.54x = 61,016.88 × 12,969.54
  4. Step 4: Simplify right side
    40,671.54x = 791,360,865.84
  5. Step 5: Solve for x
    x = 791,360,865.84/40,671.54
  6. Step 6: Final answer
    x = 19,457.36

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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.