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Finding the Fourth Proportional to 92,889.63, 128,218.28 and 54,648.72

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Solution

The fourth proportional to 92,889.63, 128,218.28 and 54,648.72 is: 75,433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,889.63 : 128,218.28 = 54,648.72 : x
  2. Step 2: Convert to fraction form
    92,889.63/128,218.28 = 54,648.72/x
  3. Step 3: Cross multiply
    92,889.63x = 128,218.28 × 54,648.72
  4. Step 4: Simplify right side
    92,889.63x = 7,006,964,609.36
  5. Step 5: Solve for x
    x = 7,006,964,609.36/92,889.63
  6. Step 6: Final answer
    x = 75,433.23

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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.