Home / 42,020.66-57,970.14-30,079.64

Finding the Fourth Proportional to 42,020.66, 57,970.14 and 30,079.64

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Solution

The fourth proportional to 42,020.66, 57,970.14 and 30,079.64 is: 41,496.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.66 : 57,970.14 = 30,079.64 : x
  2. Step 2: Convert to fraction form
    42,020.66/57,970.14 = 30,079.64/x
  3. Step 3: Cross multiply
    42,020.66x = 57,970.14 × 30,079.64
  4. Step 4: Simplify right side
    42,020.66x = 1,743,720,941.95
  5. Step 5: Solve for x
    x = 1,743,720,941.95/42,020.66
  6. Step 6: Final answer
    x = 41,496.75

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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.