Home / 57,643.20-86,464.80-54,581.40

Finding the Fourth Proportional to 57,643.20, 86,464.80 and 54,581.40

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Solution

The fourth proportional to 57,643.20, 86,464.80 and 54,581.40 is: 81,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,643.20 : 86,464.80 = 54,581.40 : x
  2. Step 2: Convert to fraction form
    57,643.20/86,464.80 = 54,581.40/x
  3. Step 3: Cross multiply
    57,643.20x = 86,464.80 × 54,581.40
  4. Step 4: Simplify right side
    57,643.20x = 4,719,369,834.72
  5. Step 5: Solve for x
    x = 4,719,369,834.72/57,643.20
  6. Step 6: Final answer
    x = 81,872.10

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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.