Home / 71,787.10-99,054.39-39,955.18

Finding the Fourth Proportional to 71,787.10, 99,054.39 and 39,955.18

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Solution

The fourth proportional to 71,787.10, 99,054.39 and 39,955.18 is: 55,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,787.10 : 99,054.39 = 39,955.18 : x
  2. Step 2: Convert to fraction form
    71,787.10/99,054.39 = 39,955.18/x
  3. Step 3: Cross multiply
    71,787.10x = 99,054.39 × 39,955.18
  4. Step 4: Simplify right side
    71,787.10x = 3,957,735,982.24
  5. Step 5: Solve for x
    x = 3,957,735,982.24/71,787.10
  6. Step 6: Final answer
    x = 55,131.58

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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.