Home / 81,588.12-112,619.70-51,424.26

Finding the Fourth Proportional to 81,588.12, 112,619.70 and 51,424.26

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Solution

The fourth proportional to 81,588.12, 112,619.70 and 51,424.26 is: 70,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,588.12 : 112,619.70 = 51,424.26 : x
  2. Step 2: Convert to fraction form
    81,588.12/112,619.70 = 51,424.26/x
  3. Step 3: Cross multiply
    81,588.12x = 112,619.70 × 51,424.26
  4. Step 4: Simplify right side
    81,588.12x = 5,791,384,733.92
  5. Step 5: Solve for x
    x = 5,791,384,733.92/81,588.12
  6. Step 6: Final answer
    x = 70,983.19

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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.