Home / 77,421.11-116,131.40-51,119.60

Finding the Fourth Proportional to 77,421.11, 116,131.40 and 51,119.60

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Solution

The fourth proportional to 77,421.11, 116,131.40 and 51,119.60 is: 76,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,421.11 : 116,131.40 = 51,119.60 : x
  2. Step 2: Convert to fraction form
    77,421.11/116,131.40 = 51,119.60/x
  3. Step 3: Cross multiply
    77,421.11x = 116,131.40 × 51,119.60
  4. Step 4: Simplify right side
    77,421.11x = 5,936,590,459.84
  5. Step 5: Solve for x
    x = 5,936,590,459.84/77,421.11
  6. Step 6: Final answer
    x = 76,679.22

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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.