Home / 56,916.92-85,384.64-21,381

Finding the Fourth Proportional to 56,916.92, 85,384.64 and 21,381

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Solution

The fourth proportional to 56,916.92, 85,384.64 and 21,381 is: 32,074.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,916.92 : 85,384.64 = 21,381 : x
  2. Step 2: Convert to fraction form
    56,916.92/85,384.64 = 21,381/x
  3. Step 3: Cross multiply
    56,916.92x = 85,384.64 × 21,381
  4. Step 4: Simplify right side
    56,916.92x = 1,825,608,987.84
  5. Step 5: Solve for x
    x = 1,825,608,987.84/56,916.92
  6. Step 6: Final answer
    x = 32,074.98

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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.