Home / 81,105.05-121,581.01-39,008.95

Finding the Fourth Proportional to 81,105.05, 121,581.01 and 39,008.95

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Solution

The fourth proportional to 81,105.05, 121,581.01 and 39,008.95 is: 58,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,105.05 : 121,581.01 = 39,008.95 : x
  2. Step 2: Convert to fraction form
    81,105.05/121,581.01 = 39,008.95/x
  3. Step 3: Cross multiply
    81,105.05x = 121,581.01 × 39,008.95
  4. Step 4: Simplify right side
    81,105.05x = 4,742,746,834.61
  5. Step 5: Solve for x
    x = 4,742,746,834.61/81,105.05
  6. Step 6: Final answer
    x = 58,476.59

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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.