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Finding the Fourth Proportional to 70,007.04, 105,012 and 39,039.36

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Solution

The fourth proportional to 70,007.04, 105,012 and 39,039.36 is: 58,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,007.04 : 105,012 = 39,039.36 : x
  2. Step 2: Convert to fraction form
    70,007.04/105,012 = 39,039.36/x
  3. Step 3: Cross multiply
    70,007.04x = 105,012 × 39,039.36
  4. Step 4: Simplify right side
    70,007.04x = 4,099,601,272.32
  5. Step 5: Solve for x
    x = 4,099,601,272.32/70,007.04
  6. Step 6: Final answer
    x = 58,559.84

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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.