Home / 105,400.98-145,450.26-57,653.30

Finding the Fourth Proportional to 105,400.98, 145,450.26 and 57,653.30

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Solution

The fourth proportional to 105,400.98, 145,450.26 and 57,653.30 is: 79,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,400.98 : 145,450.26 = 57,653.30 : x
  2. Step 2: Convert to fraction form
    105,400.98/145,450.26 = 57,653.30/x
  3. Step 3: Cross multiply
    105,400.98x = 145,450.26 × 57,653.30
  4. Step 4: Simplify right side
    105,400.98x = 8,385,687,474.86
  5. Step 5: Solve for x
    x = 8,385,687,474.86/105,400.98
  6. Step 6: Final answer
    x = 79,559.86

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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.