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Finding the Fourth Proportional to 71,786.39, 99,038.64 and 71,675.67

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Solution

The fourth proportional to 71,786.39, 99,038.64 and 71,675.67 is: 98,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,786.39 : 99,038.64 = 71,675.67 : x
  2. Step 2: Convert to fraction form
    71,786.39/99,038.64 = 71,675.67/x
  3. Step 3: Cross multiply
    71,786.39x = 99,038.64 × 71,675.67
  4. Step 4: Simplify right side
    71,786.39x = 7,098,661,332.37
  5. Step 5: Solve for x
    x = 7,098,661,332.37/71,786.39
  6. Step 6: Final answer
    x = 98,885.90

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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.