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Finding the Fourth Proportional to 79,089.76, 118,638 and 23,686.24

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Solution

The fourth proportional to 79,089.76, 118,638 and 23,686.24 is: 35,530.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,089.76 : 118,638 = 23,686.24 : x
  2. Step 2: Convert to fraction form
    79,089.76/118,638 = 23,686.24/x
  3. Step 3: Cross multiply
    79,089.76x = 118,638 × 23,686.24
  4. Step 4: Simplify right side
    79,089.76x = 2,810,088,141.12
  5. Step 5: Solve for x
    x = 2,810,088,141.12/79,089.76
  6. Step 6: Final answer
    x = 35,530.37

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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.