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Finding the Fourth Proportional to 91,645.44, 126,464.72 and 53,912.40

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Solution

The fourth proportional to 91,645.44, 126,464.72 and 53,912.40 is: 74,395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,645.44 : 126,464.72 = 53,912.40 : x
  2. Step 2: Convert to fraction form
    91,645.44/126,464.72 = 53,912.40/x
  3. Step 3: Cross multiply
    91,645.44x = 126,464.72 × 53,912.40
  4. Step 4: Simplify right side
    91,645.44x = 6,818,016,570.53
  5. Step 5: Solve for x
    x = 6,818,016,570.53/91,645.44
  6. Step 6: Final answer
    x = 74,395.59

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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.