Home / 90,854.31-125,372.70-56,861.37

Finding the Fourth Proportional to 90,854.31, 125,372.70 and 56,861.37

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Solution

The fourth proportional to 90,854.31, 125,372.70 and 56,861.37 is: 78,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,854.31 : 125,372.70 = 56,861.37 : x
  2. Step 2: Convert to fraction form
    90,854.31/125,372.70 = 56,861.37/x
  3. Step 3: Cross multiply
    90,854.31x = 125,372.70 × 56,861.37
  4. Step 4: Simplify right side
    90,854.31x = 7,128,863,482.60
  5. Step 5: Solve for x
    x = 7,128,863,482.60/90,854.31
  6. Step 6: Final answer
    x = 78,464.78

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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.