Home / 81,181.03-121,773.63-38,476.50

Finding the Fourth Proportional to 81,181.03, 121,773.63 and 38,476.50

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Solution

The fourth proportional to 81,181.03, 121,773.63 and 38,476.50 is: 57,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.03 : 121,773.63 = 38,476.50 : x
  2. Step 2: Convert to fraction form
    81,181.03/121,773.63 = 38,476.50/x
  3. Step 3: Cross multiply
    81,181.03x = 121,773.63 × 38,476.50
  4. Step 4: Simplify right side
    81,181.03x = 4,685,423,074.70
  5. Step 5: Solve for x
    x = 4,685,423,074.70/81,181.03
  6. Step 6: Final answer
    x = 57,715.74

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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.