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Finding the Fourth Proportional to 48,978.60, 73,403.10 and 43,405.80

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Solution

The fourth proportional to 48,978.60, 73,403.10 and 43,405.80 is: 65,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,978.60 : 73,403.10 = 43,405.80 : x
  2. Step 2: Convert to fraction form
    48,978.60/73,403.10 = 43,405.80/x
  3. Step 3: Cross multiply
    48,978.60x = 73,403.10 × 43,405.80
  4. Step 4: Simplify right side
    48,978.60x = 3,186,120,277.98
  5. Step 5: Solve for x
    x = 3,186,120,277.98/48,978.60
  6. Step 6: Final answer
    x = 65,051.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.