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Finding the Fourth Proportional to 54,749.70, 81,728.55 and 48,106.70

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Solution

The fourth proportional to 54,749.70, 81,728.55 and 48,106.70 is: 71,812.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,749.70 : 81,728.55 = 48,106.70 : x
  2. Step 2: Convert to fraction form
    54,749.70/81,728.55 = 48,106.70/x
  3. Step 3: Cross multiply
    54,749.70x = 81,728.55 × 48,106.70
  4. Step 4: Simplify right side
    54,749.70x = 3,931,690,427.64
  5. Step 5: Solve for x
    x = 3,931,690,427.64/54,749.70
  6. Step 6: Final answer
    x = 71,812.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.