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Finding the Fourth Proportional to 104,651.68, 144,418.55 and 56,905.01

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Solution

The fourth proportional to 104,651.68, 144,418.55 and 56,905.01 is: 78,528.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,651.68 : 144,418.55 = 56,905.01 : x
  2. Step 2: Convert to fraction form
    104,651.68/144,418.55 = 56,905.01/x
  3. Step 3: Cross multiply
    104,651.68x = 144,418.55 × 56,905.01
  4. Step 4: Simplify right side
    104,651.68x = 8,218,139,379.24
  5. Step 5: Solve for x
    x = 8,218,139,379.24/104,651.68
  6. Step 6: Final answer
    x = 78,528.50

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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.