Home / 81,581.12-112,610.04-51,417.26

Finding the Fourth Proportional to 81,581.12, 112,610.04 and 51,417.26

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Solution

The fourth proportional to 81,581.12, 112,610.04 and 51,417.26 is: 70,973.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.12 : 112,610.04 = 51,417.26 : x
  2. Step 2: Convert to fraction form
    81,581.12/112,610.04 = 51,417.26/x
  3. Step 3: Cross multiply
    81,581.12x = 112,610.04 × 51,417.26
  4. Step 4: Simplify right side
    81,581.12x = 5,790,099,705.29
  5. Step 5: Solve for x
    x = 5,790,099,705.29/81,581.12
  6. Step 6: Final answer
    x = 70,973.53

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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.