Home / 73,977.77-102,089.79-39,986.19

Finding the Fourth Proportional to 73,977.77, 102,089.79 and 39,986.19

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Solution

The fourth proportional to 73,977.77, 102,089.79 and 39,986.19 is: 55,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,977.77 : 102,089.79 = 39,986.19 : x
  2. Step 2: Convert to fraction form
    73,977.77/102,089.79 = 39,986.19/x
  3. Step 3: Cross multiply
    73,977.77x = 102,089.79 × 39,986.19
  4. Step 4: Simplify right side
    73,977.77x = 4,082,181,740.00
  5. Step 5: Solve for x
    x = 4,082,181,740.00/73,977.77
  6. Step 6: Final answer
    x = 55,181.19

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1.5x scale

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.