Home / 105,515.35-145,614.84-57,769.02

Finding the Fourth Proportional to 105,515.35, 145,614.84 and 57,769.02

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Solution

The fourth proportional to 105,515.35, 145,614.84 and 57,769.02 is: 79,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,515.35 : 145,614.84 = 57,769.02 : x
  2. Step 2: Convert to fraction form
    105,515.35/145,614.84 = 57,769.02/x
  3. Step 3: Cross multiply
    105,515.35x = 145,614.84 × 57,769.02
  4. Step 4: Simplify right side
    105,515.35x = 8,412,026,604.26
  5. Step 5: Solve for x
    x = 8,412,026,604.26/105,515.35
  6. Step 6: Final answer
    x = 79,723.25

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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.