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Finding the Fourth Proportional to 56,358.71, 84,574.98 and 21,298.37

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Solution

The fourth proportional to 56,358.71, 84,574.98 and 21,298.37 is: 31,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,358.71 : 84,574.98 = 21,298.37 : x
  2. Step 2: Convert to fraction form
    56,358.71/84,574.98 = 21,298.37/x
  3. Step 3: Cross multiply
    56,358.71x = 84,574.98 × 21,298.37
  4. Step 4: Simplify right side
    56,358.71x = 1,801,309,428.22
  5. Step 5: Solve for x
    x = 1,801,309,428.22/56,358.71
  6. Step 6: Final answer
    x = 31,961.51

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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.