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Finding the Fourth Proportional to 66,933.60, 92,364.80 and 38,637.60

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Solution

The fourth proportional to 66,933.60, 92,364.80 and 38,637.60 is: 53,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,933.60 : 92,364.80 = 38,637.60 : x
  2. Step 2: Convert to fraction form
    66,933.60/92,364.80 = 38,637.60/x
  3. Step 3: Cross multiply
    66,933.60x = 92,364.80 × 38,637.60
  4. Step 4: Simplify right side
    66,933.60x = 3,568,754,196.48
  5. Step 5: Solve for x
    x = 3,568,754,196.48/66,933.60
  6. Step 6: Final answer
    x = 53,317.83

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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.