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Finding the Fourth Proportional to 70,530.05, 105,813.29 and 26,169.45

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Solution

The fourth proportional to 70,530.05, 105,813.29 and 26,169.45 is: 39,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.05 : 105,813.29 = 26,169.45 : x
  2. Step 2: Convert to fraction form
    70,530.05/105,813.29 = 26,169.45/x
  3. Step 3: Cross multiply
    70,530.05x = 105,813.29 × 26,169.45
  4. Step 4: Simplify right side
    70,530.05x = 2,769,075,667.41
  5. Step 5: Solve for x
    x = 2,769,075,667.41/70,530.05
  6. Step 6: Final answer
    x = 39,260.94

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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.