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Finding the Fourth Proportional to 104,620.71, 144,376.71 and 56,874.06

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Solution

The fourth proportional to 104,620.71, 144,376.71 and 56,874.06 is: 78,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,620.71 : 144,376.71 = 56,874.06 : x
  2. Step 2: Convert to fraction form
    104,620.71/144,376.71 = 56,874.06/x
  3. Step 3: Cross multiply
    104,620.71x = 144,376.71 × 56,874.06
  4. Step 4: Simplify right side
    104,620.71x = 8,211,289,667.14
  5. Step 5: Solve for x
    x = 8,211,289,667.14/104,620.71
  6. Step 6: Final answer
    x = 78,486.27

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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.