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Finding the Fourth Proportional to 145,073.63, 217,611.84 and 43,872.48

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Solution

The fourth proportional to 145,073.63, 217,611.84 and 43,872.48 is: 65,809.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,073.63 : 217,611.84 = 43,872.48 : x
  2. Step 2: Convert to fraction form
    145,073.63/217,611.84 = 43,872.48/x
  3. Step 3: Cross multiply
    145,073.63x = 217,611.84 × 43,872.48
  4. Step 4: Simplify right side
    145,073.63x = 9,547,171,098.16
  5. Step 5: Solve for x
    x = 9,547,171,098.16/145,073.63
  6. Step 6: Final answer
    x = 65,809.14

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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.