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Finding the Fourth Proportional to 66,318.63, 91,519.70 and 36,510.63

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Solution

The fourth proportional to 66,318.63, 91,519.70 and 36,510.63 is: 50,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,318.63 : 91,519.70 = 36,510.63 : x
  2. Step 2: Convert to fraction form
    66,318.63/91,519.70 = 36,510.63/x
  3. Step 3: Cross multiply
    66,318.63x = 91,519.70 × 36,510.63
  4. Step 4: Simplify right side
    66,318.63x = 3,341,441,904.41
  5. Step 5: Solve for x
    x = 3,341,441,904.41/66,318.63
  6. Step 6: Final answer
    x = 50,384.66

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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.