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Finding the Fourth Proportional to 66,521, 91,798.98 and 36,713

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Solution

The fourth proportional to 66,521, 91,798.98 and 36,713 is: 50,663.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521 : 91,798.98 = 36,713 : x
  2. Step 2: Convert to fraction form
    66,521/91,798.98 = 36,713/x
  3. Step 3: Cross multiply
    66,521x = 91,798.98 × 36,713
  4. Step 4: Simplify right side
    66,521x = 3,370,215,952.74
  5. Step 5: Solve for x
    x = 3,370,215,952.74/66,521
  6. Step 6: Final answer
    x = 50,663.94

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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.