Home / 91,578.10-137,256.43-47,180.63

Finding the Fourth Proportional to 91,578.10, 137,256.43 and 47,180.63

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Solution

The fourth proportional to 91,578.10, 137,256.43 and 47,180.63 is: 70,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.10 : 137,256.43 = 47,180.63 : x
  2. Step 2: Convert to fraction form
    91,578.10/137,256.43 = 47,180.63/x
  3. Step 3: Cross multiply
    91,578.10x = 137,256.43 × 47,180.63
  4. Step 4: Simplify right side
    91,578.10x = 6,475,844,838.95
  5. Step 5: Solve for x
    x = 6,475,844,838.95/91,578.10
  6. Step 6: Final answer
    x = 70,713.90

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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.