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Finding the Fourth Proportional to 70,021.04, 105,033 and 39,053.36

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Solution

The fourth proportional to 70,021.04, 105,033 and 39,053.36 is: 58,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,021.04 : 105,033 = 39,053.36 : x
  2. Step 2: Convert to fraction form
    70,021.04/105,033 = 39,053.36/x
  3. Step 3: Cross multiply
    70,021.04x = 105,033 × 39,053.36
  4. Step 4: Simplify right side
    70,021.04x = 4,101,891,560.88
  5. Step 5: Solve for x
    x = 4,101,891,560.88/70,021.04
  6. Step 6: Final answer
    x = 58,580.84

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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.