Home / 81,666.05-112,699.22-45,858.38

Finding the Fourth Proportional to 81,666.05, 112,699.22 and 45,858.38

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Solution

The fourth proportional to 81,666.05, 112,699.22 and 45,858.38 is: 63,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666.05 : 112,699.22 = 45,858.38 : x
  2. Step 2: Convert to fraction form
    81,666.05/112,699.22 = 45,858.38/x
  3. Step 3: Cross multiply
    81,666.05x = 112,699.22 × 45,858.38
  4. Step 4: Simplify right side
    81,666.05x = 5,168,202,863.68
  5. Step 5: Solve for x
    x = 5,168,202,863.68/81,666.05
  6. Step 6: Final answer
    x = 63,284.60

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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.