Home / 78,501,534.94-108,313,586.94-65,990,157.49

Finding the Fourth Proportional to 78,501,534.94, 108,313,586.94 and 65,990,157.49

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Solution

The fourth proportional to 78,501,534.94, 108,313,586.94 and 65,990,157.49 is: 91,050,839.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,501,534.94 : 108,313,586.94 = 65,990,157.49 : x
  2. Step 2: Convert to fraction form
    78,501,534.94/108,313,586.94 = 65,990,157.49/x
  3. Step 3: Cross multiply
    78,501,534.94x = 108,313,586.94 × 65,990,157.49
  4. Step 4: Simplify right side
    78,501,534.94x = 7,147,630,660,477,407
  5. Step 5: Solve for x
    x = 7,147,630,660,477,407/78,501,534.94
  6. Step 6: Final answer
    x = 91,050,839.53

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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.