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Finding the Fourth Proportional to 42,909, 59,220.21 and 25,009.62

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Solution

The fourth proportional to 42,909, 59,220.21 and 25,009.62 is: 34,516.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909 : 59,220.21 = 25,009.62 : x
  2. Step 2: Convert to fraction form
    42,909/59,220.21 = 25,009.62/x
  3. Step 3: Cross multiply
    42,909x = 59,220.21 × 25,009.62
  4. Step 4: Simplify right side
    42,909x = 1,481,074,948.42
  5. Step 5: Solve for x
    x = 1,481,074,948.42/42,909
  6. Step 6: Final answer
    x = 34,516.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.