Home / 76,885.38-115,289.19-39,437.46

Finding the Fourth Proportional to 76,885.38, 115,289.19 and 39,437.46

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Solution

The fourth proportional to 76,885.38, 115,289.19 and 39,437.46 is: 59,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,885.38 : 115,289.19 = 39,437.46 : x
  2. Step 2: Convert to fraction form
    76,885.38/115,289.19 = 39,437.46/x
  3. Step 3: Cross multiply
    76,885.38x = 115,289.19 × 39,437.46
  4. Step 4: Simplify right side
    76,885.38x = 4,546,712,819.06
  5. Step 5: Solve for x
    x = 4,546,712,819.06/76,885.38
  6. Step 6: Final answer
    x = 59,136.25

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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.