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Finding the Fourth Proportional to 71,323.70, 106,985.55 and 43,330.10

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Solution

The fourth proportional to 71,323.70, 106,985.55 and 43,330.10 is: 64,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,323.70 : 106,985.55 = 43,330.10 : x
  2. Step 2: Convert to fraction form
    71,323.70/106,985.55 = 43,330.10/x
  3. Step 3: Cross multiply
    71,323.70x = 106,985.55 × 43,330.10
  4. Step 4: Simplify right side
    71,323.70x = 4,635,694,580.06
  5. Step 5: Solve for x
    x = 4,635,694,580.06/71,323.70
  6. Step 6: Final answer
    x = 64,995.15

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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.