Home / 76,829.78-105,987.49-51,342.46

Finding the Fourth Proportional to 76,829.78, 105,987.49 and 51,342.46

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Solution

The fourth proportional to 76,829.78, 105,987.49 and 51,342.46 is: 70,827.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,829.78 : 105,987.49 = 51,342.46 : x
  2. Step 2: Convert to fraction form
    76,829.78/105,987.49 = 51,342.46/x
  3. Step 3: Cross multiply
    76,829.78x = 105,987.49 × 51,342.46
  4. Step 4: Simplify right side
    76,829.78x = 5,441,658,072.50
  5. Step 5: Solve for x
    x = 5,441,658,072.50/76,829.78
  6. Step 6: Final answer
    x = 70,827.46

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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.