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Finding the Fourth Proportional to 81,751.74, 112,713.30 and 54,851.64

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Solution

The fourth proportional to 81,751.74, 112,713.30 and 54,851.64 is: 75,625.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.74 : 112,713.30 = 54,851.64 : x
  2. Step 2: Convert to fraction form
    81,751.74/112,713.30 = 54,851.64/x
  3. Step 3: Cross multiply
    81,751.74x = 112,713.30 × 54,851.64
  4. Step 4: Simplify right side
    81,751.74x = 6,182,509,354.81
  5. Step 5: Solve for x
    x = 6,182,509,354.81/81,751.74
  6. Step 6: Final answer
    x = 75,625.42

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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.