Home / 71,801.94-99,089.92-39,972.84

Finding the Fourth Proportional to 71,801.94, 99,089.92 and 39,972.84

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Solution

The fourth proportional to 71,801.94, 99,089.92 and 39,972.84 is: 55,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,801.94 : 99,089.92 = 39,972.84 : x
  2. Step 2: Convert to fraction form
    71,801.94/99,089.92 = 39,972.84/x
  3. Step 3: Cross multiply
    71,801.94x = 99,089.92 × 39,972.84
  4. Step 4: Simplify right side
    71,801.94x = 3,960,905,517.77
  5. Step 5: Solve for x
    x = 3,960,905,517.77/71,801.94
  6. Step 6: Final answer
    x = 55,164.32

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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.