Home / 45,371.61-67,924.34-31,815.78

Finding the Fourth Proportional to 45,371.61, 67,924.34 and 31,815.78

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Solution

The fourth proportional to 45,371.61, 67,924.34 and 31,815.78 is: 47,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.61 : 67,924.34 = 31,815.78 : x
  2. Step 2: Convert to fraction form
    45,371.61/67,924.34 = 31,815.78/x
  3. Step 3: Cross multiply
    45,371.61x = 67,924.34 × 31,815.78
  4. Step 4: Simplify right side
    45,371.61x = 2,161,065,699.01
  5. Step 5: Solve for x
    x = 2,161,065,699.01/45,371.61
  6. Step 6: Final answer
    x = 47,630.35

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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.