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Finding the Fourth Proportional to 104,378.41, 144,040.91 and 56,631.41

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Solution

The fourth proportional to 104,378.41, 144,040.91 and 56,631.41 is: 78,150.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,378.41 : 144,040.91 = 56,631.41 : x
  2. Step 2: Convert to fraction form
    104,378.41/144,040.91 = 56,631.41/x
  3. Step 3: Cross multiply
    104,378.41x = 144,040.91 × 56,631.41
  4. Step 4: Simplify right side
    104,378.41x = 8,157,239,830.98
  5. Step 5: Solve for x
    x = 8,157,239,830.98/104,378.41
  6. Step 6: Final answer
    x = 78,150.64

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1.5x scale

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.