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Finding the Fourth Proportional to 64,953.84, 97,433.50 and 20,579.61

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Solution

The fourth proportional to 64,953.84, 97,433.50 and 20,579.61 is: 30,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,953.84 : 97,433.50 = 20,579.61 : x
  2. Step 2: Convert to fraction form
    64,953.84/97,433.50 = 20,579.61/x
  3. Step 3: Cross multiply
    64,953.84x = 97,433.50 × 20,579.61
  4. Step 4: Simplify right side
    64,953.84x = 2,005,143,430.94
  5. Step 5: Solve for x
    x = 2,005,143,430.94/64,953.84
  6. Step 6: Final answer
    x = 30,870.28

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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.