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Finding the Fourth Proportional to 73,779.76, 101,815.95 and 40,245.76

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Solution

The fourth proportional to 73,779.76, 101,815.95 and 40,245.76 is: 55,539.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,779.76 : 101,815.95 = 40,245.76 : x
  2. Step 2: Convert to fraction form
    73,779.76/101,815.95 = 40,245.76/x
  3. Step 3: Cross multiply
    73,779.76x = 101,815.95 × 40,245.76
  4. Step 4: Simplify right side
    73,779.76x = 4,097,660,287.87
  5. Step 5: Solve for x
    x = 4,097,660,287.87/73,779.76
  6. Step 6: Final answer
    x = 55,539.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.