Home / 105,525.82-145,629.29-57,779.49

Finding the Fourth Proportional to 105,525.82, 145,629.29 and 57,779.49

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Solution

The fourth proportional to 105,525.82, 145,629.29 and 57,779.49 is: 79,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,525.82 : 145,629.29 = 57,779.49 : x
  2. Step 2: Convert to fraction form
    105,525.82/145,629.29 = 57,779.49/x
  3. Step 3: Cross multiply
    105,525.82x = 145,629.29 × 57,779.49
  4. Step 4: Simplify right side
    105,525.82x = 8,414,385,816.36
  5. Step 5: Solve for x
    x = 8,414,385,816.36/105,525.82
  6. Step 6: Final answer
    x = 79,737.70

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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.