Home / 39,423.72-54,431.28-30,332.91

Finding the Fourth Proportional to 39,423.72, 54,431.28 and 30,332.91

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Solution

The fourth proportional to 39,423.72, 54,431.28 and 30,332.91 is: 41,879.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.72 : 54,431.28 = 30,332.91 : x
  2. Step 2: Convert to fraction form
    39,423.72/54,431.28 = 30,332.91/x
  3. Step 3: Cross multiply
    39,423.72x = 54,431.28 × 30,332.91
  4. Step 4: Simplify right side
    39,423.72x = 1,651,059,117.42
  5. Step 5: Solve for x
    x = 1,651,059,117.42/39,423.72
  6. Step 6: Final answer
    x = 41,879.84

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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.