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Finding the Fourth Proportional to 144,969.75, 217,454.63 and 39,788.72

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Solution

The fourth proportional to 144,969.75, 217,454.63 and 39,788.72 is: 59,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,969.75 : 217,454.63 = 39,788.72 : x
  2. Step 2: Convert to fraction form
    144,969.75/217,454.63 = 39,788.72/x
  3. Step 3: Cross multiply
    144,969.75x = 217,454.63 × 39,788.72
  4. Step 4: Simplify right side
    144,969.75x = 8,652,240,915.01
  5. Step 5: Solve for x
    x = 8,652,240,915.01/144,969.75
  6. Step 6: Final answer
    x = 59,683.08

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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.