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Finding the Fourth Proportional to 54,151.20, 81,291.60 and 30,477.60

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Solution

The fourth proportional to 54,151.20, 81,291.60 and 30,477.60 is: 45,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,151.20 : 81,291.60 = 30,477.60 : x
  2. Step 2: Convert to fraction form
    54,151.20/81,291.60 = 30,477.60/x
  3. Step 3: Cross multiply
    54,151.20x = 81,291.60 × 30,477.60
  4. Step 4: Simplify right side
    54,151.20x = 2,477,572,868.16
  5. Step 5: Solve for x
    x = 2,477,572,868.16/54,151.20
  6. Step 6: Final answer
    x = 45,752.87

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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.