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Finding the Fourth Proportional to 66,426, 91,673.64 and 36,623.76

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Solution

The fourth proportional to 66,426, 91,673.64 and 36,623.76 is: 50,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426 : 91,673.64 = 36,623.76 : x
  2. Step 2: Convert to fraction form
    66,426/91,673.64 = 36,623.76/x
  3. Step 3: Cross multiply
    66,426x = 91,673.64 × 36,623.76
  4. Step 4: Simplify right side
    66,426x = 3,357,433,389.69
  5. Step 5: Solve for x
    x = 3,357,433,389.69/66,426
  6. Step 6: Final answer
    x = 50,543.96

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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.