Home / 78,284,916.80-117,427,375.20-47,673,915.20

Finding the Fourth Proportional to 78,284,916.80, 117,427,375.20 and 47,673,915.20

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Solution

The fourth proportional to 78,284,916.80, 117,427,375.20 and 47,673,915.20 is: 71,510,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,284,916.80 : 117,427,375.20 = 47,673,915.20 : x
  2. Step 2: Convert to fraction form
    78,284,916.80/117,427,375.20 = 47,673,915.20/x
  3. Step 3: Cross multiply
    78,284,916.80x = 117,427,375.20 × 47,673,915.20
  4. Step 4: Simplify right side
    78,284,916.80x = 5,598,222,727,443,384
  5. Step 5: Solve for x
    x = 5,598,222,727,443,384/78,284,916.80
  6. Step 6: Final answer
    x = 71,510,872.80

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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.