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Finding the Fourth Proportional to 251,038.32, 376,621.26 and 71,123.55

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Solution

The fourth proportional to 251,038.32, 376,621.26 and 71,123.55 is: 106,703.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,038.32 : 376,621.26 = 71,123.55 : x
  2. Step 2: Convert to fraction form
    251,038.32/376,621.26 = 71,123.55/x
  3. Step 3: Cross multiply
    251,038.32x = 376,621.26 × 71,123.55
  4. Step 4: Simplify right side
    251,038.32x = 26,786,641,016.67
  5. Step 5: Solve for x
    x = 26,786,641,016.67/251,038.32
  6. Step 6: Final answer
    x = 106,703.39

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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.