Home / 42,012.16-57,979.36-23,149.28

Finding the Fourth Proportional to 42,012.16, 57,979.36 and 23,149.28

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Solution

The fourth proportional to 42,012.16, 57,979.36 and 23,149.28 is: 31,947.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,012.16 : 57,979.36 = 23,149.28 : x
  2. Step 2: Convert to fraction form
    42,012.16/57,979.36 = 23,149.28/x
  3. Step 3: Cross multiply
    42,012.16x = 57,979.36 × 23,149.28
  4. Step 4: Simplify right side
    42,012.16x = 1,342,180,438.86
  5. Step 5: Solve for x
    x = 1,342,180,438.86/42,012.16
  6. Step 6: Final answer
    x = 31,947.43

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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.