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Finding the Fourth Proportional to 73,009.80, 109,629.90 and 53,425.80

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Solution

The fourth proportional to 73,009.80, 109,629.90 and 53,425.80 is: 80,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,009.80 : 109,629.90 = 53,425.80 : x
  2. Step 2: Convert to fraction form
    73,009.80/109,629.90 = 53,425.80/x
  3. Step 3: Cross multiply
    73,009.80x = 109,629.90 × 53,425.80
  4. Step 4: Simplify right side
    73,009.80x = 5,857,065,111.42
  5. Step 5: Solve for x
    x = 5,857,065,111.42/73,009.80
  6. Step 6: Final answer
    x = 80,223.00

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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.