Home / 77,121.90-106,433.64-43,133.55

Finding the Fourth Proportional to 77,121.90, 106,433.64 and 43,133.55

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Solution

The fourth proportional to 77,121.90, 106,433.64 and 43,133.55 is: 59,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,121.90 : 106,433.64 = 43,133.55 : x
  2. Step 2: Convert to fraction form
    77,121.90/106,433.64 = 43,133.55/x
  3. Step 3: Cross multiply
    77,121.90x = 106,433.64 × 43,133.55
  4. Step 4: Simplify right side
    77,121.90x = 4,590,860,732.62
  5. Step 5: Solve for x
    x = 4,590,860,732.62/77,121.90
  6. Step 6: Final answer
    x = 59,527.33

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1.5x scale

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.