Home / 90,913.76-125,435.64-58,634.72

Finding the Fourth Proportional to 90,913.76, 125,435.64 and 58,634.72

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Solution

The fourth proportional to 90,913.76, 125,435.64 and 58,634.72 is: 80,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,913.76 : 125,435.64 = 58,634.72 : x
  2. Step 2: Convert to fraction form
    90,913.76/125,435.64 = 58,634.72/x
  3. Step 3: Cross multiply
    90,913.76x = 125,435.64 × 58,634.72
  4. Step 4: Simplify right side
    90,913.76x = 7,354,883,629.42
  5. Step 5: Solve for x
    x = 7,354,883,629.42/90,913.76
  6. Step 6: Final answer
    x = 80,899.56

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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.