Home / 82,749.40-124,124.10-43,318.60

Finding the Fourth Proportional to 82,749.40, 124,124.10 and 43,318.60

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Solution

The fourth proportional to 82,749.40, 124,124.10 and 43,318.60 is: 64,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,749.40 : 124,124.10 = 43,318.60 : x
  2. Step 2: Convert to fraction form
    82,749.40/124,124.10 = 43,318.60/x
  3. Step 3: Cross multiply
    82,749.40x = 124,124.10 × 43,318.60
  4. Step 4: Simplify right side
    82,749.40x = 5,376,882,238.26
  5. Step 5: Solve for x
    x = 5,376,882,238.26/82,749.40
  6. Step 6: Final answer
    x = 64,977.90

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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.