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Finding the Fourth Proportional to 53,802.99, 80,821.26 and 45,499.68

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Solution

The fourth proportional to 53,802.99, 80,821.26 and 45,499.68 is: 68,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,802.99 : 80,821.26 = 45,499.68 : x
  2. Step 2: Convert to fraction form
    53,802.99/80,821.26 = 45,499.68/x
  3. Step 3: Cross multiply
    53,802.99x = 80,821.26 × 45,499.68
  4. Step 4: Simplify right side
    53,802.99x = 3,677,341,467.20
  5. Step 5: Solve for x
    x = 3,677,341,467.20/53,802.99
  6. Step 6: Final answer
    x = 68,348.27

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1.5x scale

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.