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Finding the Fourth Proportional to 75,665.85, 104,416.80 and 43,405.88

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Solution

The fourth proportional to 75,665.85, 104,416.80 and 43,405.88 is: 59,898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,665.85 : 104,416.80 = 43,405.88 : x
  2. Step 2: Convert to fraction form
    75,665.85/104,416.80 = 43,405.88/x
  3. Step 3: Cross multiply
    75,665.85x = 104,416.80 × 43,405.88
  4. Step 4: Simplify right side
    75,665.85x = 4,532,302,405.93
  5. Step 5: Solve for x
    x = 4,532,302,405.93/75,665.85
  6. Step 6: Final answer
    x = 59,898.92

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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.