Home / 105,690.15-145,852.37-57,942.47

Finding the Fourth Proportional to 105,690.15, 145,852.37 and 57,942.47

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Solution

The fourth proportional to 105,690.15, 145,852.37 and 57,942.47 is: 79,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,690.15 : 145,852.37 = 57,942.47 : x
  2. Step 2: Convert to fraction form
    105,690.15/145,852.37 = 57,942.47/x
  3. Step 3: Cross multiply
    105,690.15x = 145,852.37 × 57,942.47
  4. Step 4: Simplify right side
    105,690.15x = 8,451,046,283.44
  5. Step 5: Solve for x
    x = 8,451,046,283.44/105,690.15
  6. Step 6: Final answer
    x = 79,960.59

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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.