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Finding the Fourth Proportional to 78,957.63, 118,455.04 and 25,649.44

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Solution

The fourth proportional to 78,957.63, 118,455.04 and 25,649.44 is: 38,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,957.63 : 118,455.04 = 25,649.44 : x
  2. Step 2: Convert to fraction form
    78,957.63/118,455.04 = 25,649.44/x
  3. Step 3: Cross multiply
    78,957.63x = 118,455.04 × 25,649.44
  4. Step 4: Simplify right side
    78,957.63x = 3,038,305,441.18
  5. Step 5: Solve for x
    x = 3,038,305,441.18/78,957.63
  6. Step 6: Final answer
    x = 38,480.20

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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.