Home / 81,812.24-112,865.64-51,573.68

Finding the Fourth Proportional to 81,812.24, 112,865.64 and 51,573.68

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Solution

The fourth proportional to 81,812.24, 112,865.64 and 51,573.68 is: 71,149.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,812.24 : 112,865.64 = 51,573.68 : x
  2. Step 2: Convert to fraction form
    81,812.24/112,865.64 = 51,573.68/x
  3. Step 3: Cross multiply
    81,812.24x = 112,865.64 × 51,573.68
  4. Step 4: Simplify right side
    81,812.24x = 5,820,896,400.36
  5. Step 5: Solve for x
    x = 5,820,896,400.36/81,812.24
  6. Step 6: Final answer
    x = 71,149.46

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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.