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Finding the Fourth Proportional to 56,402, 84,604.36 and 18,962.56

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Solution

The fourth proportional to 56,402, 84,604.36 and 18,962.56 is: 28,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,402 : 84,604.36 = 18,962.56 : x
  2. Step 2: Convert to fraction form
    56,402/84,604.36 = 18,962.56/x
  3. Step 3: Cross multiply
    56,402x = 84,604.36 × 18,962.56
  4. Step 4: Simplify right side
    56,402x = 1,604,315,252.76
  5. Step 5: Solve for x
    x = 1,604,315,252.76/56,402
  6. Step 6: Final answer
    x = 28,444.30

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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.