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Finding the Fourth Proportional to 66,828.40, 92,219.28 and 36,607.72

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Solution

The fourth proportional to 66,828.40, 92,219.28 and 36,607.72 is: 50,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,828.40 : 92,219.28 = 36,607.72 : x
  2. Step 2: Convert to fraction form
    66,828.40/92,219.28 = 36,607.72/x
  3. Step 3: Cross multiply
    66,828.40x = 92,219.28 × 36,607.72
  4. Step 4: Simplify right side
    66,828.40x = 3,375,937,580.84
  5. Step 5: Solve for x
    x = 3,375,937,580.84/66,828.40
  6. Step 6: Final answer
    x = 50,516.51

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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.