Home / 77,430.36-116,145.26-51,128.85

Finding the Fourth Proportional to 77,430.36, 116,145.26 and 51,128.85

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Solution

The fourth proportional to 77,430.36, 116,145.26 and 51,128.85 is: 76,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,430.36 : 116,145.26 = 51,128.85 : x
  2. Step 2: Convert to fraction form
    77,430.36/116,145.26 = 51,128.85/x
  3. Step 3: Cross multiply
    77,430.36x = 116,145.26 × 51,128.85
  4. Step 4: Simplify right side
    77,430.36x = 5,938,373,321.11
  5. Step 5: Solve for x
    x = 5,938,373,321.11/77,430.36
  6. Step 6: Final answer
    x = 76,693.09

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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.