Home / 105,563.33-145,671.84-57,815.66

Finding the Fourth Proportional to 105,563.33, 145,671.84 and 57,815.66

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Solution

The fourth proportional to 105,563.33, 145,671.84 and 57,815.66 is: 79,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,563.33 : 145,671.84 = 57,815.66 : x
  2. Step 2: Convert to fraction form
    105,563.33/145,671.84 = 57,815.66/x
  3. Step 3: Cross multiply
    105,563.33x = 145,671.84 × 57,815.66
  4. Step 4: Simplify right side
    105,563.33x = 8,422,113,573.01
  5. Step 5: Solve for x
    x = 8,422,113,573.01/105,563.33
  6. Step 6: Final answer
    x = 79,782.57

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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.