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Finding the Fourth Proportional to 91,725.40, 137,717.70 and 56,733.40

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Solution

The fourth proportional to 91,725.40, 137,717.70 and 56,733.40 is: 85,180.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,725.40 : 137,717.70 = 56,733.40 : x
  2. Step 2: Convert to fraction form
    91,725.40/137,717.70 = 56,733.40/x
  3. Step 3: Cross multiply
    91,725.40x = 137,717.70 × 56,733.40
  4. Step 4: Simplify right side
    91,725.40x = 7,813,193,361.18
  5. Step 5: Solve for x
    x = 7,813,193,361.18/91,725.40
  6. Step 6: Final answer
    x = 85,180.26

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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.