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Finding the Fourth Proportional to 81,761.68, 112,840.47 and 45,466.75

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Solution

The fourth proportional to 81,761.68, 112,840.47 and 45,466.75 is: 62,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,761.68 : 112,840.47 = 45,466.75 : x
  2. Step 2: Convert to fraction form
    81,761.68/112,840.47 = 45,466.75/x
  3. Step 3: Cross multiply
    81,761.68x = 112,840.47 × 45,466.75
  4. Step 4: Simplify right side
    81,761.68x = 5,130,489,157.27
  5. Step 5: Solve for x
    x = 5,130,489,157.27/81,761.68
  6. Step 6: Final answer
    x = 62,749.31

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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.