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Finding the Fourth Proportional to 30,357.20, 45,535.80 and 29,190.80

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Solution

The fourth proportional to 30,357.20, 45,535.80 and 29,190.80 is: 43,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.20 : 45,535.80 = 29,190.80 : x
  2. Step 2: Convert to fraction form
    30,357.20/45,535.80 = 29,190.80/x
  3. Step 3: Cross multiply
    30,357.20x = 45,535.80 × 29,190.80
  4. Step 4: Simplify right side
    30,357.20x = 1,329,226,430.64
  5. Step 5: Solve for x
    x = 1,329,226,430.64/30,357.20
  6. Step 6: Final answer
    x = 43,786.20

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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.