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Finding the Fourth Proportional to 56,472.76, 84,712.02 and 21,415.32

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Solution

The fourth proportional to 56,472.76, 84,712.02 and 21,415.32 is: 32,124.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,472.76 : 84,712.02 = 21,415.32 : x
  2. Step 2: Convert to fraction form
    56,472.76/84,712.02 = 21,415.32/x
  3. Step 3: Cross multiply
    56,472.76x = 84,712.02 × 21,415.32
  4. Step 4: Simplify right side
    56,472.76x = 1,814,135,016.15
  5. Step 5: Solve for x
    x = 1,814,135,016.15/56,472.76
  6. Step 6: Final answer
    x = 32,124.07

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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.