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Finding the Fourth Proportional to 40,448.60, 60,656.70 and 14,139.80

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Solution

The fourth proportional to 40,448.60, 60,656.70 and 14,139.80 is: 21,204.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,448.60 : 60,656.70 = 14,139.80 : x
  2. Step 2: Convert to fraction form
    40,448.60/60,656.70 = 14,139.80/x
  3. Step 3: Cross multiply
    40,448.60x = 60,656.70 × 14,139.80
  4. Step 4: Simplify right side
    40,448.60x = 857,673,606.66
  5. Step 5: Solve for x
    x = 857,673,606.66/40,448.60
  6. Step 6: Final answer
    x = 21,204.04

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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.