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Finding the Fourth Proportional to 92,427, 127,548.72 and 49,985.40

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Solution

The fourth proportional to 92,427, 127,548.72 and 49,985.40 is: 68,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,427 : 127,548.72 = 49,985.40 : x
  2. Step 2: Convert to fraction form
    92,427/127,548.72 = 49,985.40/x
  3. Step 3: Cross multiply
    92,427x = 127,548.72 × 49,985.40
  4. Step 4: Simplify right side
    92,427x = 6,375,573,788.69
  5. Step 5: Solve for x
    x = 6,375,573,788.69/92,427
  6. Step 6: Final answer
    x = 68,979.56

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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.