Home / 76,707.47-105,889.07-51,571.55

Finding the Fourth Proportional to 76,707.47, 105,889.07 and 51,571.55

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Solution

The fourth proportional to 76,707.47, 105,889.07 and 51,571.55 is: 71,190.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,707.47 : 105,889.07 = 51,571.55 : x
  2. Step 2: Convert to fraction form
    76,707.47/105,889.07 = 51,571.55/x
  3. Step 3: Cross multiply
    76,707.47x = 105,889.07 × 51,571.55
  4. Step 4: Simplify right side
    76,707.47x = 5,460,863,861.61
  5. Step 5: Solve for x
    x = 5,460,863,861.61/76,707.47
  6. Step 6: Final answer
    x = 71,190.77

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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.