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Finding the Fourth Proportional to 54,533.40, 81,800.10 and 53,221.20

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Solution

The fourth proportional to 54,533.40, 81,800.10 and 53,221.20 is: 79,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,533.40 : 81,800.10 = 53,221.20 : x
  2. Step 2: Convert to fraction form
    54,533.40/81,800.10 = 53,221.20/x
  3. Step 3: Cross multiply
    54,533.40x = 81,800.10 × 53,221.20
  4. Step 4: Simplify right side
    54,533.40x = 4,353,499,482.12
  5. Step 5: Solve for x
    x = 4,353,499,482.12/54,533.40
  6. Step 6: Final answer
    x = 79,831.80

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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.