Home / 85,938.57-128,905.88-50,623.92

Finding the Fourth Proportional to 85,938.57, 128,905.88 and 50,623.92

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Solution

The fourth proportional to 85,938.57, 128,905.88 and 50,623.92 is: 75,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938.57 : 128,905.88 = 50,623.92 : x
  2. Step 2: Convert to fraction form
    85,938.57/128,905.88 = 50,623.92/x
  3. Step 3: Cross multiply
    85,938.57x = 128,905.88 × 50,623.92
  4. Step 4: Simplify right side
    85,938.57x = 6,525,720,703.53
  5. Step 5: Solve for x
    x = 6,525,720,703.53/85,938.57
  6. Step 6: Final answer
    x = 75,934.71

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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.