Home / 91,938.20-137,907.30-35,780.90

Finding the Fourth Proportional to 91,938.20, 137,907.30 and 35,780.90

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Solution

The fourth proportional to 91,938.20, 137,907.30 and 35,780.90 is: 53,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,938.20 : 137,907.30 = 35,780.90 : x
  2. Step 2: Convert to fraction form
    91,938.20/137,907.30 = 35,780.90/x
  3. Step 3: Cross multiply
    91,938.20x = 137,907.30 × 35,780.90
  4. Step 4: Simplify right side
    91,938.20x = 4,934,447,310.57
  5. Step 5: Solve for x
    x = 4,934,447,310.57/91,938.20
  6. Step 6: Final answer
    x = 53,671.35

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1.5x scale

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.