Home / 76,330.57-105,388.14-47,661.43

Finding the Fourth Proportional to 76,330.57, 105,388.14 and 47,661.43

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Solution

The fourth proportional to 76,330.57, 105,388.14 and 47,661.43 is: 65,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,330.57 : 105,388.14 = 47,661.43 : x
  2. Step 2: Convert to fraction form
    76,330.57/105,388.14 = 47,661.43/x
  3. Step 3: Cross multiply
    76,330.57x = 105,388.14 × 47,661.43
  4. Step 4: Simplify right side
    76,330.57x = 5,022,949,457.44
  5. Step 5: Solve for x
    x = 5,022,949,457.44/76,330.57
  6. Step 6: Final answer
    x = 65,805.21

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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.