Home / 81,710.12-112,768.13-54,908.44

Finding the Fourth Proportional to 81,710.12, 112,768.13 and 54,908.44

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Solution

The fourth proportional to 81,710.12, 112,768.13 and 54,908.44 is: 75,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.12 : 112,768.13 = 54,908.44 : x
  2. Step 2: Convert to fraction form
    81,710.12/112,768.13 = 54,908.44/x
  3. Step 3: Cross multiply
    81,710.12x = 112,768.13 × 54,908.44
  4. Step 4: Simplify right side
    81,710.12x = 6,191,922,100.02
  5. Step 5: Solve for x
    x = 6,191,922,100.02/81,710.12
  6. Step 6: Final answer
    x = 75,779.13

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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.