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Finding the Fourth Proportional to 54,646.60, 81,969.90 and 49,808.20

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Solution

The fourth proportional to 54,646.60, 81,969.90 and 49,808.20 is: 74,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,646.60 : 81,969.90 = 49,808.20 : x
  2. Step 2: Convert to fraction form
    54,646.60/81,969.90 = 49,808.20/x
  3. Step 3: Cross multiply
    54,646.60x = 81,969.90 × 49,808.20
  4. Step 4: Simplify right side
    54,646.60x = 4,082,773,173.18
  5. Step 5: Solve for x
    x = 4,082,773,173.18/54,646.60
  6. Step 6: Final answer
    x = 74,712.30

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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.