Home / 76,478.79-105,629.04-50,943.09

Finding the Fourth Proportional to 76,478.79, 105,629.04 and 50,943.09

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Solution

The fourth proportional to 76,478.79, 105,629.04 and 50,943.09 is: 70,360.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,478.79 : 105,629.04 = 50,943.09 : x
  2. Step 2: Convert to fraction form
    76,478.79/105,629.04 = 50,943.09/x
  3. Step 3: Cross multiply
    76,478.79x = 105,629.04 × 50,943.09
  4. Step 4: Simplify right side
    76,478.79x = 5,381,069,691.33
  5. Step 5: Solve for x
    x = 5,381,069,691.33/76,478.79
  6. Step 6: Final answer
    x = 70,360.29

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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.