Home / 81,042.95-121,650.02-45,534.61

Finding the Fourth Proportional to 81,042.95, 121,650.02 and 45,534.61

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Solution

The fourth proportional to 81,042.95, 121,650.02 and 45,534.61 is: 68,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.95 : 121,650.02 = 45,534.61 : x
  2. Step 2: Convert to fraction form
    81,042.95/121,650.02 = 45,534.61/x
  3. Step 3: Cross multiply
    81,042.95x = 121,650.02 × 45,534.61
  4. Step 4: Simplify right side
    81,042.95x = 5,539,286,638.00
  5. Step 5: Solve for x
    x = 5,539,286,638.00/81,042.95
  6. Step 6: Final answer
    x = 68,350.01

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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.