Home / 81,565.58-122,335.20-22,387.40

Finding the Fourth Proportional to 81,565.58, 122,335.20 and 22,387.40

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Solution

The fourth proportional to 81,565.58, 122,335.20 and 22,387.40 is: 33,577.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,565.58 : 122,335.20 = 22,387.40 : x
  2. Step 2: Convert to fraction form
    81,565.58/122,335.20 = 22,387.40/x
  3. Step 3: Cross multiply
    81,565.58x = 122,335.20 × 22,387.40
  4. Step 4: Simplify right side
    81,565.58x = 2,738,767,056.48
  5. Step 5: Solve for x
    x = 2,738,767,056.48/81,565.58
  6. Step 6: Final answer
    x = 33,577.49

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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.