Home / 55,421.40-83,132.10-54,546.60

Finding the Fourth Proportional to 55,421.40, 83,132.10 and 54,546.60

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Solution

The fourth proportional to 55,421.40, 83,132.10 and 54,546.60 is: 81,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,421.40 : 83,132.10 = 54,546.60 : x
  2. Step 2: Convert to fraction form
    55,421.40/83,132.10 = 54,546.60/x
  3. Step 3: Cross multiply
    55,421.40x = 83,132.10 × 54,546.60
  4. Step 4: Simplify right side
    55,421.40x = 4,534,573,405.86
  5. Step 5: Solve for x
    x = 4,534,573,405.86/55,421.40
  6. Step 6: Final answer
    x = 81,819.90

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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.