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Finding the Fourth Proportional to 66,783.47, 92,160.31 and 38,102.39

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Solution

The fourth proportional to 66,783.47, 92,160.31 and 38,102.39 is: 52,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.47 : 92,160.31 = 38,102.39 : x
  2. Step 2: Convert to fraction form
    66,783.47/92,160.31 = 38,102.39/x
  3. Step 3: Cross multiply
    66,783.47x = 92,160.31 × 38,102.39
  4. Step 4: Simplify right side
    66,783.47x = 3,511,528,074.14
  5. Step 5: Solve for x
    x = 3,511,528,074.14/66,783.47
  6. Step 6: Final answer
    x = 52,580.80

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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.