Home / 76,540.22-105,599.40-47,840.30

Finding the Fourth Proportional to 76,540.22, 105,599.40 and 47,840.30

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Solution

The fourth proportional to 76,540.22, 105,599.40 and 47,840.30 is: 66,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,540.22 : 105,599.40 = 47,840.30 : x
  2. Step 2: Convert to fraction form
    76,540.22/105,599.40 = 47,840.30/x
  3. Step 3: Cross multiply
    76,540.22x = 105,599.40 × 47,840.30
  4. Step 4: Simplify right side
    76,540.22x = 5,051,906,975.82
  5. Step 5: Solve for x
    x = 5,051,906,975.82/76,540.22
  6. Step 6: Final answer
    x = 66,003.30

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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.