Home / 105,057.11-144,979.24-57,311.46

Finding the Fourth Proportional to 105,057.11, 144,979.24 and 57,311.46

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Solution

The fourth proportional to 105,057.11, 144,979.24 and 57,311.46 is: 79,090.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,057.11 : 144,979.24 = 57,311.46 : x
  2. Step 2: Convert to fraction form
    105,057.11/144,979.24 = 57,311.46/x
  3. Step 3: Cross multiply
    105,057.11x = 144,979.24 × 57,311.46
  4. Step 4: Simplify right side
    105,057.11x = 8,308,971,914.09
  5. Step 5: Solve for x
    x = 8,308,971,914.09/105,057.11
  6. Step 6: Final answer
    x = 79,090.05

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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.