Home / 70,820.40-106,181.36-31,355.96

Finding the Fourth Proportional to 70,820.40, 106,181.36 and 31,355.96

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Solution

The fourth proportional to 70,820.40, 106,181.36 and 31,355.96 is: 47,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,820.40 : 106,181.36 = 31,355.96 : x
  2. Step 2: Convert to fraction form
    70,820.40/106,181.36 = 31,355.96/x
  3. Step 3: Cross multiply
    70,820.40x = 106,181.36 × 31,355.96
  4. Step 4: Simplify right side
    70,820.40x = 3,329,418,476.91
  5. Step 5: Solve for x
    x = 3,329,418,476.91/70,820.40
  6. Step 6: Final answer
    x = 47,012.14

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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.