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Finding the Fourth Proportional to 104,405.52, 144,079.71 and 56,658.87

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Solution

The fourth proportional to 104,405.52, 144,079.71 and 56,658.87 is: 78,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,405.52 : 144,079.71 = 56,658.87 : x
  2. Step 2: Convert to fraction form
    104,405.52/144,079.71 = 56,658.87/x
  3. Step 3: Cross multiply
    104,405.52x = 144,079.71 × 56,658.87
  4. Step 4: Simplify right side
    104,405.52x = 8,163,393,558.53
  5. Step 5: Solve for x
    x = 8,163,393,558.53/104,405.52
  6. Step 6: Final answer
    x = 78,189.29

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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.