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Finding the Fourth Proportional to 91,216.53, 136,823.85 and 28,887.03

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Solution

The fourth proportional to 91,216.53, 136,823.85 and 28,887.03 is: 43,330.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,216.53 : 136,823.85 = 28,887.03 : x
  2. Step 2: Convert to fraction form
    91,216.53/136,823.85 = 28,887.03/x
  3. Step 3: Cross multiply
    91,216.53x = 136,823.85 × 28,887.03
  4. Step 4: Simplify right side
    91,216.53x = 3,952,434,659.67
  5. Step 5: Solve for x
    x = 3,952,434,659.67/91,216.53
  6. Step 6: Final answer
    x = 43,330.25

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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.