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Finding the Fourth Proportional to 64,386.56, 96,579.84 and 17,639.84

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Solution

The fourth proportional to 64,386.56, 96,579.84 and 17,639.84 is: 26,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,386.56 : 96,579.84 = 17,639.84 : x
  2. Step 2: Convert to fraction form
    64,386.56/96,579.84 = 17,639.84/x
  3. Step 3: Cross multiply
    64,386.56x = 96,579.84 × 17,639.84
  4. Step 4: Simplify right side
    64,386.56x = 1,703,652,924.83
  5. Step 5: Solve for x
    x = 1,703,652,924.83/64,386.56
  6. Step 6: Final answer
    x = 26,459.76

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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.