Home / 90,739.36-125,187.12-54,916.32

Finding the Fourth Proportional to 90,739.36, 125,187.12 and 54,916.32

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Solution

The fourth proportional to 90,739.36, 125,187.12 and 54,916.32 is: 75,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.36 : 125,187.12 = 54,916.32 : x
  2. Step 2: Convert to fraction form
    90,739.36/125,187.12 = 54,916.32/x
  3. Step 3: Cross multiply
    90,739.36x = 125,187.12 × 54,916.32
  4. Step 4: Simplify right side
    90,739.36x = 6,874,815,941.80
  5. Step 5: Solve for x
    x = 6,874,815,941.80/90,739.36
  6. Step 6: Final answer
    x = 75,764.43

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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.