Home / 42,020.20-57,991.02-23,157.40

Finding the Fourth Proportional to 42,020.20, 57,991.02 and 23,157.40

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Solution

The fourth proportional to 42,020.20, 57,991.02 and 23,157.40 is: 31,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.20 : 57,991.02 = 23,157.40 : x
  2. Step 2: Convert to fraction form
    42,020.20/57,991.02 = 23,157.40/x
  3. Step 3: Cross multiply
    42,020.20x = 57,991.02 × 23,157.40
  4. Step 4: Simplify right side
    42,020.20x = 1,342,921,246.55
  5. Step 5: Solve for x
    x = 1,342,921,246.55/42,020.20
  6. Step 6: Final answer
    x = 31,958.94

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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.