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Finding the Fourth Proportional to 75,076.83, 112,611.24 and 18,916.92

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Solution

The fourth proportional to 75,076.83, 112,611.24 and 18,916.92 is: 28,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,076.83 : 112,611.24 = 18,916.92 : x
  2. Step 2: Convert to fraction form
    75,076.83/112,611.24 = 18,916.92/x
  3. Step 3: Cross multiply
    75,076.83x = 112,611.24 × 18,916.92
  4. Step 4: Simplify right side
    75,076.83x = 2,130,257,818.18
  5. Step 5: Solve for x
    x = 2,130,257,818.18/75,076.83
  6. Step 6: Final answer
    x = 28,374.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.