Home / 78,913,136.40-108,903,923.85-43,630,288.64

Finding the Fourth Proportional to 78,913,136.40, 108,903,923.85 and 43,630,288.64

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Solution

The fourth proportional to 78,913,136.40, 108,903,923.85 and 43,630,288.64 is: 60,211,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913,136.40 : 108,903,923.85 = 43,630,288.64 : x
  2. Step 2: Convert to fraction form
    78,913,136.40/108,903,923.85 = 43,630,288.64/x
  3. Step 3: Cross multiply
    78,913,136.40x = 108,903,923.85 × 43,630,288.64
  4. Step 4: Simplify right side
    78,913,136.40x = 4,751,509,631,447,444
  5. Step 5: Solve for x
    x = 4,751,509,631,447,444/78,913,136.40
  6. Step 6: Final answer
    x = 60,211,896.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.