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Finding the Fourth Proportional to 66,931.82, 92,366.62 and 36,717.20

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Solution

The fourth proportional to 66,931.82, 92,366.62 and 36,717.20 is: 50,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.82 : 92,366.62 = 36,717.20 : x
  2. Step 2: Convert to fraction form
    66,931.82/92,366.62 = 36,717.20/x
  3. Step 3: Cross multiply
    66,931.82x = 92,366.62 × 36,717.20
  4. Step 4: Simplify right side
    66,931.82x = 3,391,443,106.24
  5. Step 5: Solve for x
    x = 3,391,443,106.24/66,931.82
  6. Step 6: Final answer
    x = 50,670.12

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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.