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Finding the Fourth Proportional to 101,125.64, 139,552.26 and 55,803.98

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Solution

The fourth proportional to 101,125.64, 139,552.26 and 55,803.98 is: 77,008.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,125.64 : 139,552.26 = 55,803.98 : x
  2. Step 2: Convert to fraction form
    101,125.64/139,552.26 = 55,803.98/x
  3. Step 3: Cross multiply
    101,125.64x = 139,552.26 × 55,803.98
  4. Step 4: Simplify right side
    101,125.64x = 7,787,571,525.99
  5. Step 5: Solve for x
    x = 7,787,571,525.99/101,125.64
  6. Step 6: Final answer
    x = 77,008.87

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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.