Home / 76,632.56-105,718.20-55,378.16

Finding the Fourth Proportional to 76,632.56, 105,718.20 and 55,378.16

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Solution

The fourth proportional to 76,632.56, 105,718.20 and 55,378.16 is: 76,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,632.56 : 105,718.20 = 55,378.16 : x
  2. Step 2: Convert to fraction form
    76,632.56/105,718.20 = 55,378.16/x
  3. Step 3: Cross multiply
    76,632.56x = 105,718.20 × 55,378.16
  4. Step 4: Simplify right side
    76,632.56x = 5,854,479,394.51
  5. Step 5: Solve for x
    x = 5,854,479,394.51/76,632.56
  6. Step 6: Final answer
    x = 76,396.76

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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.