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Finding the Fourth Proportional to 66,957.81, 92,401.77 and 38,278.09

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Solution

The fourth proportional to 66,957.81, 92,401.77 and 38,278.09 is: 52,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,957.81 : 92,401.77 = 38,278.09 : x
  2. Step 2: Convert to fraction form
    66,957.81/92,401.77 = 38,278.09/x
  3. Step 3: Cross multiply
    66,957.81x = 92,401.77 × 38,278.09
  4. Step 4: Simplify right side
    66,957.81x = 3,536,963,268.22
  5. Step 5: Solve for x
    x = 3,536,963,268.22/66,957.81
  6. Step 6: Final answer
    x = 52,823.76

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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.