Home / 81,261.30-112,141.31-45,454.64

Finding the Fourth Proportional to 81,261.30, 112,141.31 and 45,454.64

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Solution

The fourth proportional to 81,261.30, 112,141.31 and 45,454.64 is: 62,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,261.30 : 112,141.31 = 45,454.64 : x
  2. Step 2: Convert to fraction form
    81,261.30/112,141.31 = 45,454.64/x
  3. Step 3: Cross multiply
    81,261.30x = 112,141.31 × 45,454.64
  4. Step 4: Simplify right side
    81,261.30x = 5,097,342,717.99
  5. Step 5: Solve for x
    x = 5,097,342,717.99/81,261.30
  6. Step 6: Final answer
    x = 62,727.80

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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.