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Finding the Fourth Proportional to 92,421.78, 127,542.06 and 49,980.30

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Solution

The fourth proportional to 92,421.78, 127,542.06 and 49,980.30 is: 68,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,421.78 : 127,542.06 = 49,980.30 : x
  2. Step 2: Convert to fraction form
    92,421.78/127,542.06 = 49,980.30/x
  3. Step 3: Cross multiply
    92,421.78x = 127,542.06 × 49,980.30
  4. Step 4: Simplify right side
    92,421.78x = 6,374,590,421.42
  5. Step 5: Solve for x
    x = 6,374,590,421.42/92,421.78
  6. Step 6: Final answer
    x = 68,972.82

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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.