Home / 77,066.20-115,512.90-39,611.80

Finding the Fourth Proportional to 77,066.20, 115,512.90 and 39,611.80

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Solution

The fourth proportional to 77,066.20, 115,512.90 and 39,611.80 is: 59,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,066.20 : 115,512.90 = 39,611.80 : x
  2. Step 2: Convert to fraction form
    77,066.20/115,512.90 = 39,611.80/x
  3. Step 3: Cross multiply
    77,066.20x = 115,512.90 × 39,611.80
  4. Step 4: Simplify right side
    77,066.20x = 4,575,673,892.22
  5. Step 5: Solve for x
    x = 4,575,673,892.22/77,066.20
  6. Step 6: Final answer
    x = 59,373.29

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1.5x scale

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.