Home / 55,213.80-82,723.10-53,386.60

Finding the Fourth Proportional to 55,213.80, 82,723.10 and 53,386.60

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Solution

The fourth proportional to 55,213.80, 82,723.10 and 53,386.60 is: 79,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,213.80 : 82,723.10 = 53,386.60 : x
  2. Step 2: Convert to fraction form
    55,213.80/82,723.10 = 53,386.60/x
  3. Step 3: Cross multiply
    55,213.80x = 82,723.10 × 53,386.60
  4. Step 4: Simplify right side
    55,213.80x = 4,416,305,050.46
  5. Step 5: Solve for x
    x = 4,416,305,050.46/55,213.80
  6. Step 6: Final answer
    x = 79,985.53

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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.