Home / 81,428.82-121,962.78-62,570.04

Finding the Fourth Proportional to 81,428.82, 121,962.78 and 62,570.04

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Solution

The fourth proportional to 81,428.82, 121,962.78 and 62,570.04 is: 93,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.82 : 121,962.78 = 62,570.04 : x
  2. Step 2: Convert to fraction form
    81,428.82/121,962.78 = 62,570.04/x
  3. Step 3: Cross multiply
    81,428.82x = 121,962.78 × 62,570.04
  4. Step 4: Simplify right side
    81,428.82x = 7,631,216,023.11
  5. Step 5: Solve for x
    x = 7,631,216,023.11/81,428.82
  6. Step 6: Final answer
    x = 93,716.40

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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.