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Finding the Fourth Proportional to 70,166.89, 105,300.75 and 28,022.81

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Solution

The fourth proportional to 70,166.89, 105,300.75 and 28,022.81 is: 42,054.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,166.89 : 105,300.75 = 28,022.81 : x
  2. Step 2: Convert to fraction form
    70,166.89/105,300.75 = 28,022.81/x
  3. Step 3: Cross multiply
    70,166.89x = 105,300.75 × 28,022.81
  4. Step 4: Simplify right side
    70,166.89x = 2,950,822,910.11
  5. Step 5: Solve for x
    x = 2,950,822,910.11/70,166.89
  6. Step 6: Final answer
    x = 42,054.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.