Home / 81,629.37-112,640.81-45,812.39

Finding the Fourth Proportional to 81,629.37, 112,640.81 and 45,812.39

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Solution

The fourth proportional to 81,629.37, 112,640.81 and 45,812.39 is: 63,216.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.37 : 112,640.81 = 45,812.39 : x
  2. Step 2: Convert to fraction form
    81,629.37/112,640.81 = 45,812.39/x
  3. Step 3: Cross multiply
    81,629.37x = 112,640.81 × 45,812.39
  4. Step 4: Simplify right side
    81,629.37x = 5,160,343,925.37
  5. Step 5: Solve for x
    x = 5,160,343,925.37/81,629.37
  6. Step 6: Final answer
    x = 63,216.76

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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.