Home / 81,807.36-112,828.32-54,941.76

Finding the Fourth Proportional to 81,807.36, 112,828.32 and 54,941.76

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Solution

The fourth proportional to 81,807.36, 112,828.32 and 54,941.76 is: 75,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,807.36 : 112,828.32 = 54,941.76 : x
  2. Step 2: Convert to fraction form
    81,807.36/112,828.32 = 54,941.76/x
  3. Step 3: Cross multiply
    81,807.36x = 112,828.32 × 54,941.76
  4. Step 4: Simplify right side
    81,807.36x = 6,198,986,478.64
  5. Step 5: Solve for x
    x = 6,198,986,478.64/81,807.36
  6. Step 6: Final answer
    x = 75,775.41

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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.