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Finding the Fourth Proportional to 79,098.60, 118,475.10 and 61,429.80

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Solution

The fourth proportional to 79,098.60, 118,475.10 and 61,429.80 is: 92,010.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,098.60 : 118,475.10 = 61,429.80 : x
  2. Step 2: Convert to fraction form
    79,098.60/118,475.10 = 61,429.80/x
  3. Step 3: Cross multiply
    79,098.60x = 118,475.10 × 61,429.80
  4. Step 4: Simplify right side
    79,098.60x = 7,277,901,697.98
  5. Step 5: Solve for x
    x = 7,277,901,697.98/79,098.60
  6. Step 6: Final answer
    x = 92,010.50

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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.