Home / 38,857.47-53,390.91-30,885.86

Finding the Fourth Proportional to 38,857.47, 53,390.91 and 30,885.86

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Solution

The fourth proportional to 38,857.47, 53,390.91 and 30,885.86 is: 42,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,857.47 : 53,390.91 = 30,885.86 : x
  2. Step 2: Convert to fraction form
    38,857.47/53,390.91 = 30,885.86/x
  3. Step 3: Cross multiply
    38,857.47x = 53,390.91 × 30,885.86
  4. Step 4: Simplify right side
    38,857.47x = 1,649,023,904.58
  5. Step 5: Solve for x
    x = 1,649,023,904.58/38,857.47
  6. Step 6: Final answer
    x = 42,437.76

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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.