Home / 47,679.21-65,751.59-28,555.92

Finding the Fourth Proportional to 47,679.21, 65,751.59 and 28,555.92

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Solution

The fourth proportional to 47,679.21, 65,751.59 and 28,555.92 is: 39,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,679.21 : 65,751.59 = 28,555.92 : x
  2. Step 2: Convert to fraction form
    47,679.21/65,751.59 = 28,555.92/x
  3. Step 3: Cross multiply
    47,679.21x = 65,751.59 × 28,555.92
  4. Step 4: Simplify right side
    47,679.21x = 1,877,597,001.13
  5. Step 5: Solve for x
    x = 1,877,597,001.13/47,679.21
  6. Step 6: Final answer
    x = 39,379.78

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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.