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Finding the Fourth Proportional to 66,934.41, 92,368.72 and 38,639.49

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Solution

The fourth proportional to 66,934.41, 92,368.72 and 38,639.49 is: 53,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,934.41 : 92,368.72 = 38,639.49 : x
  2. Step 2: Convert to fraction form
    66,934.41/92,368.72 = 38,639.49/x
  3. Step 3: Cross multiply
    66,934.41x = 92,368.72 × 38,639.49
  4. Step 4: Simplify right side
    66,934.41x = 3,569,080,232.75
  5. Step 5: Solve for x
    x = 3,569,080,232.75/66,934.41
  6. Step 6: Final answer
    x = 53,322.05

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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.