Home / 90,639.13-125,079.76-50,353

Finding the Fourth Proportional to 90,639.13, 125,079.76 and 50,353

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Solution

The fourth proportional to 90,639.13, 125,079.76 and 50,353 is: 69,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.13 : 125,079.76 = 50,353 : x
  2. Step 2: Convert to fraction form
    90,639.13/125,079.76 = 50,353/x
  3. Step 3: Cross multiply
    90,639.13x = 125,079.76 × 50,353
  4. Step 4: Simplify right side
    90,639.13x = 6,298,141,155.28
  5. Step 5: Solve for x
    x = 6,298,141,155.28/90,639.13
  6. Step 6: Final answer
    x = 69,485.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.