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Finding the Fourth Proportional to 70,554.96, 105,670.08 and 40,899.60

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Solution

The fourth proportional to 70,554.96, 105,670.08 and 40,899.60 is: 61,255.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,554.96 : 105,670.08 = 40,899.60 : x
  2. Step 2: Convert to fraction form
    70,554.96/105,670.08 = 40,899.60/x
  3. Step 3: Cross multiply
    70,554.96x = 105,670.08 × 40,899.60
  4. Step 4: Simplify right side
    70,554.96x = 4,321,864,003.97
  5. Step 5: Solve for x
    x = 4,321,864,003.97/70,554.96
  6. Step 6: Final answer
    x = 61,255.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.