Home / 81,428.45-121,962.22-62,569.67

Finding the Fourth Proportional to 81,428.45, 121,962.22 and 62,569.67

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Solution

The fourth proportional to 81,428.45, 121,962.22 and 62,569.67 is: 93,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.45 : 121,962.22 = 62,569.67 : x
  2. Step 2: Convert to fraction form
    81,428.45/121,962.22 = 62,569.67/x
  3. Step 3: Cross multiply
    81,428.45x = 121,962.22 × 62,569.67
  4. Step 4: Simplify right side
    81,428.45x = 7,631,135,091.63
  5. Step 5: Solve for x
    x = 7,631,135,091.63/81,428.45
  6. Step 6: Final answer
    x = 93,715.84

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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.