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Finding the Fourth Proportional to 92,955.42, 128,289.42 and 55,229.70

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Solution

The fourth proportional to 92,955.42, 128,289.42 and 55,229.70 is: 76,223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,955.42 : 128,289.42 = 55,229.70 : x
  2. Step 2: Convert to fraction form
    92,955.42/128,289.42 = 55,229.70/x
  3. Step 3: Cross multiply
    92,955.42x = 128,289.42 × 55,229.70
  4. Step 4: Simplify right side
    92,955.42x = 7,085,386,179.77
  5. Step 5: Solve for x
    x = 7,085,386,179.77/92,955.42
  6. Step 6: Final answer
    x = 76,223.49

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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.