Home / 81,389.34-112,242.30-55,850.64

Finding the Fourth Proportional to 81,389.34, 112,242.30 and 55,850.64

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Solution

The fourth proportional to 81,389.34, 112,242.30 and 55,850.64 is: 77,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389.34 : 112,242.30 = 55,850.64 : x
  2. Step 2: Convert to fraction form
    81,389.34/112,242.30 = 55,850.64/x
  3. Step 3: Cross multiply
    81,389.34x = 112,242.30 × 55,850.64
  4. Step 4: Simplify right side
    81,389.34x = 6,268,804,290.07
  5. Step 5: Solve for x
    x = 6,268,804,290.07/81,389.34
  6. Step 6: Final answer
    x = 77,022.42

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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.