Home / 55,728.20-76,828.98-39,784.94

Finding the Fourth Proportional to 55,728.20, 76,828.98 and 39,784.94

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Solution

The fourth proportional to 55,728.20, 76,828.98 and 39,784.94 is: 54,849.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,728.20 : 76,828.98 = 39,784.94 : x
  2. Step 2: Convert to fraction form
    55,728.20/76,828.98 = 39,784.94/x
  3. Step 3: Cross multiply
    55,728.20x = 76,828.98 × 39,784.94
  4. Step 4: Simplify right side
    55,728.20x = 3,056,636,359.56
  5. Step 5: Solve for x
    x = 3,056,636,359.56/55,728.20
  6. Step 6: Final answer
    x = 54,849.01

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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.