Home / 81,431.62-112,430.57-50,851.44

Finding the Fourth Proportional to 81,431.62, 112,430.57 and 50,851.44

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Solution

The fourth proportional to 81,431.62, 112,430.57 and 50,851.44 is: 70,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.62 : 112,430.57 = 50,851.44 : x
  2. Step 2: Convert to fraction form
    81,431.62/112,430.57 = 50,851.44/x
  3. Step 3: Cross multiply
    81,431.62x = 112,430.57 × 50,851.44
  4. Step 4: Simplify right side
    81,431.62x = 5,717,256,130.26
  5. Step 5: Solve for x
    x = 5,717,256,130.26/81,431.62
  6. Step 6: Final answer
    x = 70,209.29

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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.