Home / 81,338.12-112,250.80-45,039.39

Finding the Fourth Proportional to 81,338.12, 112,250.80 and 45,039.39

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Solution

The fourth proportional to 81,338.12, 112,250.80 and 45,039.39 is: 62,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338.12 : 112,250.80 = 45,039.39 : x
  2. Step 2: Convert to fraction form
    81,338.12/112,250.80 = 45,039.39/x
  3. Step 3: Cross multiply
    81,338.12x = 112,250.80 × 45,039.39
  4. Step 4: Simplify right side
    81,338.12x = 5,055,707,194.37
  5. Step 5: Solve for x
    x = 5,055,707,194.37/81,338.12
  6. Step 6: Final answer
    x = 62,156.68

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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.