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Finding the Fourth Proportional to 66,992.34, 92,445.95 and 39,769.56

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Solution

The fourth proportional to 66,992.34, 92,445.95 and 39,769.56 is: 54,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992.34 : 92,445.95 = 39,769.56 : x
  2. Step 2: Convert to fraction form
    66,992.34/92,445.95 = 39,769.56/x
  3. Step 3: Cross multiply
    66,992.34x = 92,445.95 × 39,769.56
  4. Step 4: Simplify right side
    66,992.34x = 3,676,534,392.48
  5. Step 5: Solve for x
    x = 3,676,534,392.48/66,992.34
  6. Step 6: Final answer
    x = 54,879.92

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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.