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Finding the Fourth Proportional to 101,364.60, 139,872.43 and 56,035.28

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Solution

The fourth proportional to 101,364.60, 139,872.43 and 56,035.28 is: 77,322.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,364.60 : 139,872.43 = 56,035.28 : x
  2. Step 2: Convert to fraction form
    101,364.60/139,872.43 = 56,035.28/x
  3. Step 3: Cross multiply
    101,364.60x = 139,872.43 × 56,035.28
  4. Step 4: Simplify right side
    101,364.60x = 7,837,789,939.88
  5. Step 5: Solve for x
    x = 7,837,789,939.88/101,364.60
  6. Step 6: Final answer
    x = 77,322.75

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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.