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Finding the Fourth Proportional to 76,832.76, 115,264.80 and 43,567.68

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Solution

The fourth proportional to 76,832.76, 115,264.80 and 43,567.68 is: 65,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,832.76 : 115,264.80 = 43,567.68 : x
  2. Step 2: Convert to fraction form
    76,832.76/115,264.80 = 43,567.68/x
  3. Step 3: Cross multiply
    76,832.76x = 115,264.80 × 43,567.68
  4. Step 4: Simplify right side
    76,832.76x = 5,021,819,921.66
  5. Step 5: Solve for x
    x = 5,021,819,921.66/76,832.76
  6. Step 6: Final answer
    x = 65,360.40

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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.