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Finding the Fourth Proportional to 54,830.60, 82,245.90 and 54,312.20

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Solution

The fourth proportional to 54,830.60, 82,245.90 and 54,312.20 is: 81,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,830.60 : 82,245.90 = 54,312.20 : x
  2. Step 2: Convert to fraction form
    54,830.60/82,245.90 = 54,312.20/x
  3. Step 3: Cross multiply
    54,830.60x = 82,245.90 × 54,312.20
  4. Step 4: Simplify right side
    54,830.60x = 4,466,955,769.98
  5. Step 5: Solve for x
    x = 4,466,955,769.98/54,830.60
  6. Step 6: Final answer
    x = 81,468.30

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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.