Home / 77,742.78-116,609.52-45,739.80

Finding the Fourth Proportional to 77,742.78, 116,609.52 and 45,739.80

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Solution

The fourth proportional to 77,742.78, 116,609.52 and 45,739.80 is: 68,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.78 : 116,609.52 = 45,739.80 : x
  2. Step 2: Convert to fraction form
    77,742.78/116,609.52 = 45,739.80/x
  3. Step 3: Cross multiply
    77,742.78x = 116,609.52 × 45,739.80
  4. Step 4: Simplify right side
    77,742.78x = 5,333,696,122.90
  5. Step 5: Solve for x
    x = 5,333,696,122.90/77,742.78
  6. Step 6: Final answer
    x = 68,606.96

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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.