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Finding the Fourth Proportional to 79,357.12, 118,985.04 and 34,354.24

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Solution

The fourth proportional to 79,357.12, 118,985.04 and 34,354.24 is: 51,509.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,357.12 : 118,985.04 = 34,354.24 : x
  2. Step 2: Convert to fraction form
    79,357.12/118,985.04 = 34,354.24/x
  3. Step 3: Cross multiply
    79,357.12x = 118,985.04 × 34,354.24
  4. Step 4: Simplify right side
    79,357.12x = 4,087,640,620.57
  5. Step 5: Solve for x
    x = 4,087,640,620.57/79,357.12
  6. Step 6: Final answer
    x = 51,509.44

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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.