Home / 76,640.73-105,762.64-47,976.20

Finding the Fourth Proportional to 76,640.73, 105,762.64 and 47,976.20

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Solution

The fourth proportional to 76,640.73, 105,762.64 and 47,976.20 is: 66,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640.73 : 105,762.64 = 47,976.20 : x
  2. Step 2: Convert to fraction form
    76,640.73/105,762.64 = 47,976.20/x
  3. Step 3: Cross multiply
    76,640.73x = 105,762.64 × 47,976.20
  4. Step 4: Simplify right side
    76,640.73x = 5,074,089,325.72
  5. Step 5: Solve for x
    x = 5,074,089,325.72/76,640.73
  6. Step 6: Final answer
    x = 66,206.17

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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.