Home / 78,496,300.80-117,576,489.60-69,986,246.40

Finding the Fourth Proportional to 78,496,300.80, 117,576,489.60 and 69,986,246.40

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Solution

The fourth proportional to 78,496,300.80, 117,576,489.60 and 69,986,246.40 is: 104,829,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,496,300.80 : 117,576,489.60 = 69,986,246.40 : x
  2. Step 2: Convert to fraction form
    78,496,300.80/117,576,489.60 = 69,986,246.40/x
  3. Step 3: Cross multiply
    78,496,300.80x = 117,576,489.60 × 69,986,246.40
  4. Step 4: Simplify right side
    78,496,300.80x = 8,228,737,171,992,638
  5. Step 5: Solve for x
    x = 8,228,737,171,992,638/78,496,300.80
  6. Step 6: Final answer
    x = 104,829,617.30

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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.