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Finding the Fourth Proportional to 71,690.68, 98,938.68 and 43,011.42

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Solution

The fourth proportional to 71,690.68, 98,938.68 and 43,011.42 is: 59,359.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,690.68 : 98,938.68 = 43,011.42 : x
  2. Step 2: Convert to fraction form
    71,690.68/98,938.68 = 43,011.42/x
  3. Step 3: Cross multiply
    71,690.68x = 98,938.68 × 43,011.42
  4. Step 4: Simplify right side
    71,690.68x = 4,255,493,119.73
  5. Step 5: Solve for x
    x = 4,255,493,119.73/71,690.68
  6. Step 6: Final answer
    x = 59,359.08

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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.