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Finding the Fourth Proportional to 79,590.98, 109,834.93 and 43,780.20

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Solution

The fourth proportional to 79,590.98, 109,834.93 and 43,780.20 is: 60,416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590.98 : 109,834.93 = 43,780.20 : x
  2. Step 2: Convert to fraction form
    79,590.98/109,834.93 = 43,780.20/x
  3. Step 3: Cross multiply
    79,590.98x = 109,834.93 × 43,780.20
  4. Step 4: Simplify right side
    79,590.98x = 4,808,595,257.11
  5. Step 5: Solve for x
    x = 4,808,595,257.11/79,590.98
  6. Step 6: Final answer
    x = 60,416.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.