Home / 105,731.49-145,913.67-57,986.58

Finding the Fourth Proportional to 105,731.49, 145,913.67 and 57,986.58

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Solution

The fourth proportional to 105,731.49, 145,913.67 and 57,986.58 is: 80,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,731.49 : 145,913.67 = 57,986.58 : x
  2. Step 2: Convert to fraction form
    105,731.49/145,913.67 = 57,986.58/x
  3. Step 3: Cross multiply
    105,731.49x = 145,913.67 × 57,986.58
  4. Step 4: Simplify right side
    105,731.49x = 8,461,034,698.55
  5. Step 5: Solve for x
    x = 8,461,034,698.55/105,731.49
  6. Step 6: Final answer
    x = 80,023.79

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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.