Home / 81,205.35-121,799.70-22,047

Finding the Fourth Proportional to 81,205.35, 121,799.70 and 22,047

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Solution

The fourth proportional to 81,205.35, 121,799.70 and 22,047 is: 33,068.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,205.35 : 121,799.70 = 22,047 : x
  2. Step 2: Convert to fraction form
    81,205.35/121,799.70 = 22,047/x
  3. Step 3: Cross multiply
    81,205.35x = 121,799.70 × 22,047
  4. Step 4: Simplify right side
    81,205.35x = 2,685,317,985.90
  5. Step 5: Solve for x
    x = 2,685,317,985.90/81,205.35
  6. Step 6: Final answer
    x = 33,068.24

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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.