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Finding the Fourth Proportional to 64,376.90, 96,572.55 and 20,003.30

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Solution

The fourth proportional to 64,376.90, 96,572.55 and 20,003.30 is: 30,007.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,376.90 : 96,572.55 = 20,003.30 : x
  2. Step 2: Convert to fraction form
    64,376.90/96,572.55 = 20,003.30/x
  3. Step 3: Cross multiply
    64,376.90x = 96,572.55 × 20,003.30
  4. Step 4: Simplify right side
    64,376.90x = 1,931,769,689.42
  5. Step 5: Solve for x
    x = 1,931,769,689.42/64,376.90
  6. Step 6: Final answer
    x = 30,007.19

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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.