Home / 77,661,838.80-116,492,758.20-72,874,933.20

Finding the Fourth Proportional to 77,661,838.80, 116,492,758.20 and 72,874,933.20

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Solution

The fourth proportional to 77,661,838.80, 116,492,758.20 and 72,874,933.20 is: 109,312,399.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661,838.80 : 116,492,758.20 = 72,874,933.20 : x
  2. Step 2: Convert to fraction form
    77,661,838.80/116,492,758.20 = 72,874,933.20/x
  3. Step 3: Cross multiply
    77,661,838.80x = 116,492,758.20 × 72,874,933.20
  4. Step 4: Simplify right side
    77,661,838.80x = 8,489,401,972,108,753
  5. Step 5: Solve for x
    x = 8,489,401,972,108,753/77,661,838.80
  6. Step 6: Final answer
    x = 109,312,399.80

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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.