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Finding the Fourth Proportional to 101,054.64, 139,453.50 and 55,736.76

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Solution

The fourth proportional to 101,054.64, 139,453.50 and 55,736.76 is: 76,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,054.64 : 139,453.50 = 55,736.76 : x
  2. Step 2: Convert to fraction form
    101,054.64/139,453.50 = 55,736.76/x
  3. Step 3: Cross multiply
    101,054.64x = 139,453.50 × 55,736.76
  4. Step 4: Simplify right side
    101,054.64x = 7,772,686,260.66
  5. Step 5: Solve for x
    x = 7,772,686,260.66/101,054.64
  6. Step 6: Final answer
    x = 76,915.68

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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.