Home / 105,474.90-145,554.84-57,076.79

Finding the Fourth Proportional to 105,474.90, 145,554.84 and 57,076.79

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Solution

The fourth proportional to 105,474.90, 145,554.84 and 57,076.79 is: 78,765.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,474.90 : 145,554.84 = 57,076.79 : x
  2. Step 2: Convert to fraction form
    105,474.90/145,554.84 = 57,076.79/x
  3. Step 3: Cross multiply
    105,474.90x = 145,554.84 × 57,076.79
  4. Step 4: Simplify right side
    105,474.90x = 8,307,802,750.78
  5. Step 5: Solve for x
    x = 8,307,802,750.78/105,474.90
  6. Step 6: Final answer
    x = 78,765.69

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1.5x scale

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.