Home / 81,049.74-121,567.31-57,458.39

Finding the Fourth Proportional to 81,049.74, 121,567.31 and 57,458.39

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Solution

The fourth proportional to 81,049.74, 121,567.31 and 57,458.39 is: 86,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.74 : 121,567.31 = 57,458.39 : x
  2. Step 2: Convert to fraction form
    81,049.74/121,567.31 = 57,458.39/x
  3. Step 3: Cross multiply
    81,049.74x = 121,567.31 × 57,458.39
  4. Step 4: Simplify right side
    81,049.74x = 6,985,061,409.88
  5. Step 5: Solve for x
    x = 6,985,061,409.88/81,049.74
  6. Step 6: Final answer
    x = 86,182.40

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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.