Home / 57,982.10-86,989.35-28,400.90

Finding the Fourth Proportional to 57,982.10, 86,989.35 and 28,400.90

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Solution

The fourth proportional to 57,982.10, 86,989.35 and 28,400.90 is: 42,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,982.10 : 86,989.35 = 28,400.90 : x
  2. Step 2: Convert to fraction form
    57,982.10/86,989.35 = 28,400.90/x
  3. Step 3: Cross multiply
    57,982.10x = 86,989.35 × 28,400.90
  4. Step 4: Simplify right side
    57,982.10x = 2,470,575,830.42
  5. Step 5: Solve for x
    x = 2,470,575,830.42/57,982.10
  6. Step 6: Final answer
    x = 42,609.29

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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.