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Finding the Fourth Proportional to 79,798.98, 119,702.58 and 20,635.16

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Solution

The fourth proportional to 79,798.98, 119,702.58 and 20,635.16 is: 30,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,798.98 : 119,702.58 = 20,635.16 : x
  2. Step 2: Convert to fraction form
    79,798.98/119,702.58 = 20,635.16/x
  3. Step 3: Cross multiply
    79,798.98x = 119,702.58 × 20,635.16
  4. Step 4: Simplify right side
    79,798.98x = 2,470,081,890.71
  5. Step 5: Solve for x
    x = 2,470,081,890.71/79,798.98
  6. Step 6: Final answer
    x = 30,953.80

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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.