Home / 85,863.30-128,734.95-50,784.90

Finding the Fourth Proportional to 85,863.30, 128,734.95 and 50,784.90

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Solution

The fourth proportional to 85,863.30, 128,734.95 and 50,784.90 is: 76,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,863.30 : 128,734.95 = 50,784.90 : x
  2. Step 2: Convert to fraction form
    85,863.30/128,734.95 = 50,784.90/x
  3. Step 3: Cross multiply
    85,863.30x = 128,734.95 × 50,784.90
  4. Step 4: Simplify right side
    85,863.30x = 6,537,791,562.26
  5. Step 5: Solve for x
    x = 6,537,791,562.26/85,863.30
  6. Step 6: Final answer
    x = 76,141.86

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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.