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Finding the Fourth Proportional to 64,038.43, 96,057.65 and 21,919.06

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Solution

The fourth proportional to 64,038.43, 96,057.65 and 21,919.06 is: 32,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,038.43 : 96,057.65 = 21,919.06 : x
  2. Step 2: Convert to fraction form
    64,038.43/96,057.65 = 21,919.06/x
  3. Step 3: Cross multiply
    64,038.43x = 96,057.65 × 21,919.06
  4. Step 4: Simplify right side
    64,038.43x = 2,105,493,393.81
  5. Step 5: Solve for x
    x = 2,105,493,393.81/64,038.43
  6. Step 6: Final answer
    x = 32,878.59

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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.