Home / 57,680.20-86,520.30-35,421.40

Finding the Fourth Proportional to 57,680.20, 86,520.30 and 35,421.40

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Solution

The fourth proportional to 57,680.20, 86,520.30 and 35,421.40 is: 53,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.20 : 86,520.30 = 35,421.40 : x
  2. Step 2: Convert to fraction form
    57,680.20/86,520.30 = 35,421.40/x
  3. Step 3: Cross multiply
    57,680.20x = 86,520.30 × 35,421.40
  4. Step 4: Simplify right side
    57,680.20x = 3,064,670,154.42
  5. Step 5: Solve for x
    x = 3,064,670,154.42/57,680.20
  6. Step 6: Final answer
    x = 53,132.10

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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.