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Finding the Fourth Proportional to 54,554.60, 75,276.60 and 30,681.20

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Solution

The fourth proportional to 54,554.60, 75,276.60 and 30,681.20 is: 42,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,554.60 : 75,276.60 = 30,681.20 : x
  2. Step 2: Convert to fraction form
    54,554.60/75,276.60 = 30,681.20/x
  3. Step 3: Cross multiply
    54,554.60x = 75,276.60 × 30,681.20
  4. Step 4: Simplify right side
    54,554.60x = 2,309,576,419.92
  5. Step 5: Solve for x
    x = 2,309,576,419.92/54,554.60
  6. Step 6: Final answer
    x = 42,335.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.