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Finding the Fourth Proportional to 43,159.74, 64,748.40 and 18,199.80

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Solution

The fourth proportional to 43,159.74, 64,748.40 and 18,199.80 is: 27,303.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,159.74 : 64,748.40 = 18,199.80 : x
  2. Step 2: Convert to fraction form
    43,159.74/64,748.40 = 18,199.80/x
  3. Step 3: Cross multiply
    43,159.74x = 64,748.40 × 18,199.80
  4. Step 4: Simplify right side
    43,159.74x = 1,178,407,930.32
  5. Step 5: Solve for x
    x = 1,178,407,930.32/43,159.74
  6. Step 6: Final answer
    x = 27,303.41

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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.