Home / 91,329.40-137,015.70-28,999.90

Finding the Fourth Proportional to 91,329.40, 137,015.70 and 28,999.90

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Solution

The fourth proportional to 91,329.40, 137,015.70 and 28,999.90 is: 43,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,329.40 : 137,015.70 = 28,999.90 : x
  2. Step 2: Convert to fraction form
    91,329.40/137,015.70 = 28,999.90/x
  3. Step 3: Cross multiply
    91,329.40x = 137,015.70 × 28,999.90
  4. Step 4: Simplify right side
    91,329.40x = 3,973,441,598.43
  5. Step 5: Solve for x
    x = 3,973,441,598.43/91,329.40
  6. Step 6: Final answer
    x = 43,506.71

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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.