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Finding the Fourth Proportional to 70,259.04, 105,388.56 and 28,706

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Solution

The fourth proportional to 70,259.04, 105,388.56 and 28,706 is: 43,059.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,259.04 : 105,388.56 = 28,706 : x
  2. Step 2: Convert to fraction form
    70,259.04/105,388.56 = 28,706/x
  3. Step 3: Cross multiply
    70,259.04x = 105,388.56 × 28,706
  4. Step 4: Simplify right side
    70,259.04x = 3,025,284,003.36
  5. Step 5: Solve for x
    x = 3,025,284,003.36/70,259.04
  6. Step 6: Final answer
    x = 43,059.00

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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.