Home / 42,515.07-58,678.92-28,149.56

Finding the Fourth Proportional to 42,515.07, 58,678.92 and 28,149.56

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Solution

The fourth proportional to 42,515.07, 58,678.92 and 28,149.56 is: 38,851.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,515.07 : 58,678.92 = 28,149.56 : x
  2. Step 2: Convert to fraction form
    42,515.07/58,678.92 = 28,149.56/x
  3. Step 3: Cross multiply
    42,515.07x = 58,678.92 × 28,149.56
  4. Step 4: Simplify right side
    42,515.07x = 1,651,785,485.88
  5. Step 5: Solve for x
    x = 1,651,785,485.88/42,515.07
  6. Step 6: Final answer
    x = 38,851.76

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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.