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Finding the Fourth Proportional to 70,133.48, 105,005.02 and 54,581.48

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Solution

The fourth proportional to 70,133.48, 105,005.02 and 54,581.48 is: 81,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,133.48 : 105,005.02 = 54,581.48 : x
  2. Step 2: Convert to fraction form
    70,133.48/105,005.02 = 54,581.48/x
  3. Step 3: Cross multiply
    70,133.48x = 105,005.02 × 54,581.48
  4. Step 4: Simplify right side
    70,133.48x = 5,731,329,399.03
  5. Step 5: Solve for x
    x = 5,731,329,399.03/70,133.48
  6. Step 6: Final answer
    x = 81,720.31

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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.