Home / 81,941.20-113,074.02-46,129.78

Finding the Fourth Proportional to 81,941.20, 113,074.02 and 46,129.78

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Solution

The fourth proportional to 81,941.20, 113,074.02 and 46,129.78 is: 63,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941.20 : 113,074.02 = 46,129.78 : x
  2. Step 2: Convert to fraction form
    81,941.20/113,074.02 = 46,129.78/x
  3. Step 3: Cross multiply
    81,941.20x = 113,074.02 × 46,129.78
  4. Step 4: Simplify right side
    81,941.20x = 5,216,079,666.32
  5. Step 5: Solve for x
    x = 5,216,079,666.32/81,941.20
  6. Step 6: Final answer
    x = 63,656.37

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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.