Home / 81,027.73-121,541.59-21,863.40

Finding the Fourth Proportional to 81,027.73, 121,541.59 and 21,863.40

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Solution

The fourth proportional to 81,027.73, 121,541.59 and 21,863.40 is: 32,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,027.73 : 121,541.59 = 21,863.40 : x
  2. Step 2: Convert to fraction form
    81,027.73/121,541.59 = 21,863.40/x
  3. Step 3: Cross multiply
    81,027.73x = 121,541.59 × 21,863.40
  4. Step 4: Simplify right side
    81,027.73x = 2,657,312,398.81
  5. Step 5: Solve for x
    x = 2,657,312,398.81/81,027.73
  6. Step 6: Final answer
    x = 32,795.10

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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.