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Finding the Fourth Proportional to 70,639.29, 105,949.44 and 26,259.93

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Solution

The fourth proportional to 70,639.29, 105,949.44 and 26,259.93 is: 39,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.29 : 105,949.44 = 26,259.93 : x
  2. Step 2: Convert to fraction form
    70,639.29/105,949.44 = 26,259.93/x
  3. Step 3: Cross multiply
    70,639.29x = 105,949.44 × 26,259.93
  4. Step 4: Simplify right side
    70,639.29x = 2,782,224,877.94
  5. Step 5: Solve for x
    x = 2,782,224,877.94/70,639.29
  6. Step 6: Final answer
    x = 39,386.37

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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.