Home / 85,659,469.08-128,333,314.12-76,476,168.60

Finding the Fourth Proportional to 85,659,469.08, 128,333,314.12 and 76,476,168.60

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Solution

The fourth proportional to 85,659,469.08, 128,333,314.12 and 76,476,168.60 is: 114,575,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659,469.08 : 128,333,314.12 = 76,476,168.60 : x
  2. Step 2: Convert to fraction form
    85,659,469.08/128,333,314.12 = 76,476,168.60/x
  3. Step 3: Cross multiply
    85,659,469.08x = 128,333,314.12 × 76,476,168.60
  4. Step 4: Simplify right side
    85,659,469.08x = 9,814,440,167,637,880
  5. Step 5: Solve for x
    x = 9,814,440,167,637,880/85,659,469.08
  6. Step 6: Final answer
    x = 114,575,075.86

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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.