Home / 76,875.90-115,372.20-51,856.62

Finding the Fourth Proportional to 76,875.90, 115,372.20 and 51,856.62

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Solution

The fourth proportional to 76,875.90, 115,372.20 and 51,856.62 is: 77,824.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,875.90 : 115,372.20 = 51,856.62 : x
  2. Step 2: Convert to fraction form
    76,875.90/115,372.20 = 51,856.62/x
  3. Step 3: Cross multiply
    76,875.90x = 115,372.20 × 51,856.62
  4. Step 4: Simplify right side
    76,875.90x = 5,982,812,333.96
  5. Step 5: Solve for x
    x = 5,982,812,333.96/76,875.90
  6. Step 6: Final answer
    x = 77,824.29

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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.