Home / 76,900.60-115,309.77-39,445.36

Finding the Fourth Proportional to 76,900.60, 115,309.77 and 39,445.36

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Solution

The fourth proportional to 76,900.60, 115,309.77 and 39,445.36 is: 59,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,900.60 : 115,309.77 = 39,445.36 : x
  2. Step 2: Convert to fraction form
    76,900.60/115,309.77 = 39,445.36/x
  3. Step 3: Cross multiply
    76,900.60x = 115,309.77 × 39,445.36
  4. Step 4: Simplify right side
    76,900.60x = 4,548,435,389.17
  5. Step 5: Solve for x
    x = 4,548,435,389.17/76,900.60
  6. Step 6: Final answer
    x = 59,146.94

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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.