Home / 85,853,395.80-128,591,136.90-51,715,200.60

Finding the Fourth Proportional to 85,853,395.80, 128,591,136.90 and 51,715,200.60

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Solution

The fourth proportional to 85,853,395.80, 128,591,136.90 and 51,715,200.60 is: 77,458,979.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,853,395.80 : 128,591,136.90 = 51,715,200.60 : x
  2. Step 2: Convert to fraction form
    85,853,395.80/128,591,136.90 = 51,715,200.60/x
  3. Step 3: Cross multiply
    85,853,395.80x = 128,591,136.90 × 51,715,200.60
  4. Step 4: Simplify right side
    85,853,395.80x = 6,650,116,440,165,563
  5. Step 5: Solve for x
    x = 6,650,116,440,165,563/85,853,395.80
  6. Step 6: Final answer
    x = 77,458,979.67

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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.