Home / 82,286,890.40-123,430,335.60-68,949,495.20

Finding the Fourth Proportional to 82,286,890.40, 123,430,335.60 and 68,949,495.20

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Solution

The fourth proportional to 82,286,890.40, 123,430,335.60 and 68,949,495.20 is: 103,424,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,286,890.40 : 123,430,335.60 = 68,949,495.20 : x
  2. Step 2: Convert to fraction form
    82,286,890.40/123,430,335.60 = 68,949,495.20/x
  3. Step 3: Cross multiply
    82,286,890.40x = 123,430,335.60 × 68,949,495.20
  4. Step 4: Simplify right side
    82,286,890.40x = 8,510,459,331,986,589
  5. Step 5: Solve for x
    x = 8,510,459,331,986,589/82,286,890.40
  6. Step 6: Final answer
    x = 103,424,242.80

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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.