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Finding the Fourth Proportional to 92,711, 127,963.32 and 55,007.12

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Solution

The fourth proportional to 92,711, 127,963.32 and 55,007.12 is: 75,922.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,711 : 127,963.32 = 55,007.12 : x
  2. Step 2: Convert to fraction form
    92,711/127,963.32 = 55,007.12/x
  3. Step 3: Cross multiply
    92,711x = 127,963.32 × 55,007.12
  4. Step 4: Simplify right side
    92,711x = 7,038,893,698.84
  5. Step 5: Solve for x
    x = 7,038,893,698.84/92,711
  6. Step 6: Final answer
    x = 75,922.96

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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.