Home / 82,380.80-113,666.40-48,387.53

Finding the Fourth Proportional to 82,380.80, 113,666.40 and 48,387.53

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Solution

The fourth proportional to 82,380.80, 113,666.40 and 48,387.53 is: 66,763.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,380.80 : 113,666.40 = 48,387.53 : x
  2. Step 2: Convert to fraction form
    82,380.80/113,666.40 = 48,387.53/x
  3. Step 3: Cross multiply
    82,380.80x = 113,666.40 × 48,387.53
  4. Step 4: Simplify right side
    82,380.80x = 5,500,035,771.66
  5. Step 5: Solve for x
    x = 5,500,035,771.66/82,380.80
  6. Step 6: Final answer
    x = 66,763.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.