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Finding the Fourth Proportional to 101,811.60, 140,499.84 and 56,496.56

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Solution

The fourth proportional to 101,811.60, 140,499.84 and 56,496.56 is: 77,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,811.60 : 140,499.84 = 56,496.56 : x
  2. Step 2: Convert to fraction form
    101,811.60/140,499.84 = 56,496.56/x
  3. Step 3: Cross multiply
    101,811.60x = 140,499.84 × 56,496.56
  4. Step 4: Simplify right side
    101,811.60x = 7,937,757,640.55
  5. Step 5: Solve for x
    x = 7,937,757,640.55/101,811.60
  6. Step 6: Final answer
    x = 77,965.16

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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.