Home / 78,267,943.80-117,401,915.70-27,155,129.40

Finding the Fourth Proportional to 78,267,943.80, 117,401,915.70 and 27,155,129.40

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Solution

The fourth proportional to 78,267,943.80, 117,401,915.70 and 27,155,129.40 is: 40,732,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,267,943.80 : 117,401,915.70 = 27,155,129.40 : x
  2. Step 2: Convert to fraction form
    78,267,943.80/117,401,915.70 = 27,155,129.40/x
  3. Step 3: Cross multiply
    78,267,943.80x = 117,401,915.70 × 27,155,129.40
  4. Step 4: Simplify right side
    78,267,943.80x = 3,188,064,212,641,391.50
  5. Step 5: Solve for x
    x = 3,188,064,212,641,391.50/78,267,943.80
  6. Step 6: Final answer
    x = 40,732,694.10

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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.