Home / 91,454.10-137,080.79-47,083.21

Finding the Fourth Proportional to 91,454.10, 137,080.79 and 47,083.21

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Solution

The fourth proportional to 91,454.10, 137,080.79 and 47,083.21 is: 70,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,454.10 : 137,080.79 = 47,083.21 : x
  2. Step 2: Convert to fraction form
    91,454.10/137,080.79 = 47,083.21/x
  3. Step 3: Cross multiply
    91,454.10x = 137,080.79 × 47,083.21
  4. Step 4: Simplify right side
    91,454.10x = 6,454,203,220.98
  5. Step 5: Solve for x
    x = 6,454,203,220.98/91,454.10
  6. Step 6: Final answer
    x = 70,573.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.