Home / 115,172.12-172,779.96-45,047

Finding the Fourth Proportional to 115,172.12, 172,779.96 and 45,047

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Solution

The fourth proportional to 115,172.12, 172,779.96 and 45,047 is: 67,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,172.12 : 172,779.96 = 45,047 : x
  2. Step 2: Convert to fraction form
    115,172.12/172,779.96 = 45,047/x
  3. Step 3: Cross multiply
    115,172.12x = 172,779.96 × 45,047
  4. Step 4: Simplify right side
    115,172.12x = 7,783,218,858.12
  5. Step 5: Solve for x
    x = 7,783,218,858.12/115,172.12
  6. Step 6: Final answer
    x = 67,579.02

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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.