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Finding the Fourth Proportional to 56,381.40, 84,353.40 and 36,698.40

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Solution

The fourth proportional to 56,381.40, 84,353.40 and 36,698.40 is: 54,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,381.40 : 84,353.40 = 36,698.40 : x
  2. Step 2: Convert to fraction form
    56,381.40/84,353.40 = 36,698.40/x
  3. Step 3: Cross multiply
    56,381.40x = 84,353.40 × 36,698.40
  4. Step 4: Simplify right side
    56,381.40x = 3,095,634,814.56
  5. Step 5: Solve for x
    x = 3,095,634,814.56/56,381.40
  6. Step 6: Final answer
    x = 54,905.25

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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.