Home / 81,739.95-122,606.52-28,444.13

Finding the Fourth Proportional to 81,739.95, 122,606.52 and 28,444.13

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Solution

The fourth proportional to 81,739.95, 122,606.52 and 28,444.13 is: 42,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.95 : 122,606.52 = 28,444.13 : x
  2. Step 2: Convert to fraction form
    81,739.95/122,606.52 = 28,444.13/x
  3. Step 3: Cross multiply
    81,739.95x = 122,606.52 × 28,444.13
  4. Step 4: Simplify right side
    81,739.95x = 3,487,435,793.73
  5. Step 5: Solve for x
    x = 3,487,435,793.73/81,739.95
  6. Step 6: Final answer
    x = 42,665.01

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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.