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Finding the Fourth Proportional to 70,742.74, 97,638.86 and 40,548.30

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Solution

The fourth proportional to 70,742.74, 97,638.86 and 40,548.30 is: 55,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,742.74 : 97,638.86 = 40,548.30 : x
  2. Step 2: Convert to fraction form
    70,742.74/97,638.86 = 40,548.30/x
  3. Step 3: Cross multiply
    70,742.74x = 97,638.86 × 40,548.30
  4. Step 4: Simplify right side
    70,742.74x = 3,959,089,786.94
  5. Step 5: Solve for x
    x = 3,959,089,786.94/70,742.74
  6. Step 6: Final answer
    x = 55,964.61

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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.