Home / 40,393.38-55,749.53-30,815.18

Finding the Fourth Proportional to 40,393.38, 55,749.53 and 30,815.18

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Solution

The fourth proportional to 40,393.38, 55,749.53 and 30,815.18 is: 42,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,393.38 : 55,749.53 = 30,815.18 : x
  2. Step 2: Convert to fraction form
    40,393.38/55,749.53 = 30,815.18/x
  3. Step 3: Cross multiply
    40,393.38x = 55,749.53 × 30,815.18
  4. Step 4: Simplify right side
    40,393.38x = 1,717,931,809.22
  5. Step 5: Solve for x
    x = 1,717,931,809.22/40,393.38
  6. Step 6: Final answer
    x = 42,530.03

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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.