Home / 85,824,371.20-128,736,556.80-53,512,758.40

Finding the Fourth Proportional to 85,824,371.20, 128,736,556.80 and 53,512,758.40

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Solution

The fourth proportional to 85,824,371.20, 128,736,556.80 and 53,512,758.40 is: 80,269,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,371.20 : 128,736,556.80 = 53,512,758.40 : x
  2. Step 2: Convert to fraction form
    85,824,371.20/128,736,556.80 = 53,512,758.40/x
  3. Step 3: Cross multiply
    85,824,371.20x = 128,736,556.80 × 53,512,758.40
  4. Step 4: Simplify right side
    85,824,371.20x = 6,889,048,261,286,277
  5. Step 5: Solve for x
    x = 6,889,048,261,286,277/85,824,371.20
  6. Step 6: Final answer
    x = 80,269,137.60

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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.