Home / 91,589.06-137,403.27-28,407.86

Finding the Fourth Proportional to 91,589.06, 137,403.27 and 28,407.86

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Solution

The fourth proportional to 91,589.06, 137,403.27 and 28,407.86 is: 42,617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,589.06 : 137,403.27 = 28,407.86 : x
  2. Step 2: Convert to fraction form
    91,589.06/137,403.27 = 28,407.86/x
  3. Step 3: Cross multiply
    91,589.06x = 137,403.27 × 28,407.86
  4. Step 4: Simplify right side
    91,589.06x = 3,903,332,857.70
  5. Step 5: Solve for x
    x = 3,903,332,857.70/91,589.06
  6. Step 6: Final answer
    x = 42,617.89

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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.