Home / 81,539.75-112,537.15-49,727.10

Finding the Fourth Proportional to 81,539.75, 112,537.15 and 49,727.10

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Solution

The fourth proportional to 81,539.75, 112,537.15 and 49,727.10 is: 68,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,539.75 : 112,537.15 = 49,727.10 : x
  2. Step 2: Convert to fraction form
    81,539.75/112,537.15 = 49,727.10/x
  3. Step 3: Cross multiply
    81,539.75x = 112,537.15 × 49,727.10
  4. Step 4: Simplify right side
    81,539.75x = 5,596,146,111.77
  5. Step 5: Solve for x
    x = 5,596,146,111.77/81,539.75
  6. Step 6: Final answer
    x = 68,630.90

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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.