Home / 31,937.81-43,755.01-30,740.68

Finding the Fourth Proportional to 31,937.81, 43,755.01 and 30,740.68

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Solution

The fourth proportional to 31,937.81, 43,755.01 and 30,740.68 is: 42,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,937.81 : 43,755.01 = 30,740.68 : x
  2. Step 2: Convert to fraction form
    31,937.81/43,755.01 = 30,740.68/x
  3. Step 3: Cross multiply
    31,937.81x = 43,755.01 × 30,740.68
  4. Step 4: Simplify right side
    31,937.81x = 1,345,058,760.81
  5. Step 5: Solve for x
    x = 1,345,058,760.81/31,937.81
  6. Step 6: Final answer
    x = 42,114.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.