Home / 81,030.73-121,546.10-21,866.40

Finding the Fourth Proportional to 81,030.73, 121,546.10 and 21,866.40

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Solution

The fourth proportional to 81,030.73, 121,546.10 and 21,866.40 is: 32,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,030.73 : 121,546.10 = 21,866.40 : x
  2. Step 2: Convert to fraction form
    81,030.73/121,546.10 = 21,866.40/x
  3. Step 3: Cross multiply
    81,030.73x = 121,546.10 × 21,866.40
  4. Step 4: Simplify right side
    81,030.73x = 2,657,775,641.04
  5. Step 5: Solve for x
    x = 2,657,775,641.04/81,030.73
  6. Step 6: Final answer
    x = 32,799.60

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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.