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Finding the Fourth Proportional to 92,385.72, 127,505.52 and 66,976.20

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Solution

The fourth proportional to 92,385.72, 127,505.52 and 66,976.20 is: 92,436.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,385.72 : 127,505.52 = 66,976.20 : x
  2. Step 2: Convert to fraction form
    92,385.72/127,505.52 = 66,976.20/x
  3. Step 3: Cross multiply
    92,385.72x = 127,505.52 × 66,976.20
  4. Step 4: Simplify right side
    92,385.72x = 8,539,835,208.62
  5. Step 5: Solve for x
    x = 8,539,835,208.62/92,385.72
  6. Step 6: Final answer
    x = 92,436.74

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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.