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Finding the Fourth Proportional to 104,043.50, 143,579 and 56,295.80

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Solution

The fourth proportional to 104,043.50, 143,579 and 56,295.80 is: 77,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,043.50 : 143,579 = 56,295.80 : x
  2. Step 2: Convert to fraction form
    104,043.50/143,579 = 56,295.80/x
  3. Step 3: Cross multiply
    104,043.50x = 143,579 × 56,295.80
  4. Step 4: Simplify right side
    104,043.50x = 8,082,894,668.20
  5. Step 5: Solve for x
    x = 8,082,894,668.20/104,043.50
  6. Step 6: Final answer
    x = 77,687.65

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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.