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Finding the Fourth Proportional to 56,364.57, 84,552.45 and 20,835.20

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Solution

The fourth proportional to 56,364.57, 84,552.45 and 20,835.20 is: 31,254.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,364.57 : 84,552.45 = 20,835.20 : x
  2. Step 2: Convert to fraction form
    56,364.57/84,552.45 = 20,835.20/x
  3. Step 3: Cross multiply
    56,364.57x = 84,552.45 × 20,835.20
  4. Step 4: Simplify right side
    56,364.57x = 1,761,666,783.48
  5. Step 5: Solve for x
    x = 1,761,666,783.48/56,364.57
  6. Step 6: Final answer
    x = 31,254.86

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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.