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Finding the Fourth Proportional to 101,382.64, 139,906.57 and 56,059.62

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Solution

The fourth proportional to 101,382.64, 139,906.57 and 56,059.62 is: 77,361.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,382.64 : 139,906.57 = 56,059.62 : x
  2. Step 2: Convert to fraction form
    101,382.64/139,906.57 = 56,059.62/x
  3. Step 3: Cross multiply
    101,382.64x = 139,906.57 × 56,059.62
  4. Step 4: Simplify right side
    101,382.64x = 7,843,108,825.84
  5. Step 5: Solve for x
    x = 7,843,108,825.84/101,382.64
  6. Step 6: Final answer
    x = 77,361.46

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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.