Home / 81,611.12-122,439.54-29,025.92

Finding the Fourth Proportional to 81,611.12, 122,439.54 and 29,025.92

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Solution

The fourth proportional to 81,611.12, 122,439.54 and 29,025.92 is: 43,547.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,611.12 : 122,439.54 = 29,025.92 : x
  2. Step 2: Convert to fraction form
    81,611.12/122,439.54 = 29,025.92/x
  3. Step 3: Cross multiply
    81,611.12x = 122,439.54 × 29,025.92
  4. Step 4: Simplify right side
    81,611.12x = 3,553,920,292.88
  5. Step 5: Solve for x
    x = 3,553,920,292.88/81,611.12
  6. Step 6: Final answer
    x = 43,547.01

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1.5x scale

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.