Home / 76,625.89-105,683.80-49,777.05

Finding the Fourth Proportional to 76,625.89, 105,683.80 and 49,777.05

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Solution

The fourth proportional to 76,625.89, 105,683.80 and 49,777.05 is: 68,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,625.89 : 105,683.80 = 49,777.05 : x
  2. Step 2: Convert to fraction form
    76,625.89/105,683.80 = 49,777.05/x
  3. Step 3: Cross multiply
    76,625.89x = 105,683.80 × 49,777.05
  4. Step 4: Simplify right side
    76,625.89x = 5,260,627,796.79
  5. Step 5: Solve for x
    x = 5,260,627,796.79/76,625.89
  6. Step 6: Final answer
    x = 68,653.40

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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.