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Finding the Fourth Proportional to 42,660.54, 58,857.03 and 25,890.30

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Solution

The fourth proportional to 42,660.54, 58,857.03 and 25,890.30 is: 35,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,660.54 : 58,857.03 = 25,890.30 : x
  2. Step 2: Convert to fraction form
    42,660.54/58,857.03 = 25,890.30/x
  3. Step 3: Cross multiply
    42,660.54x = 58,857.03 × 25,890.30
  4. Step 4: Simplify right side
    42,660.54x = 1,523,826,163.81
  5. Step 5: Solve for x
    x = 1,523,826,163.81/42,660.54
  6. Step 6: Final answer
    x = 35,719.80

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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.