Home / 57,406.20-86,109.30-53,129.40

Finding the Fourth Proportional to 57,406.20, 86,109.30 and 53,129.40

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Solution

The fourth proportional to 57,406.20, 86,109.30 and 53,129.40 is: 79,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,406.20 : 86,109.30 = 53,129.40 : x
  2. Step 2: Convert to fraction form
    57,406.20/86,109.30 = 53,129.40/x
  3. Step 3: Cross multiply
    57,406.20x = 86,109.30 × 53,129.40
  4. Step 4: Simplify right side
    57,406.20x = 4,574,935,443.42
  5. Step 5: Solve for x
    x = 4,574,935,443.42/57,406.20
  6. Step 6: Final answer
    x = 79,694.10

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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.