Home / 81,612.39-122,344.73-29,009.58

Finding the Fourth Proportional to 81,612.39, 122,344.73 and 29,009.58

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Solution

The fourth proportional to 81,612.39, 122,344.73 and 29,009.58 is: 43,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,612.39 : 122,344.73 = 29,009.58 : x
  2. Step 2: Convert to fraction form
    81,612.39/122,344.73 = 29,009.58/x
  3. Step 3: Cross multiply
    81,612.39x = 122,344.73 × 29,009.58
  4. Step 4: Simplify right side
    81,612.39x = 3,549,168,737.46
  5. Step 5: Solve for x
    x = 3,549,168,737.46/81,612.39
  6. Step 6: Final answer
    x = 43,488.11

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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.