Home / 57,835.32-79,780.86-39,939.72

Finding the Fourth Proportional to 57,835.32, 79,780.86 and 39,939.72

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Solution

The fourth proportional to 57,835.32, 79,780.86 and 39,939.72 is: 55,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,835.32 : 79,780.86 = 39,939.72 : x
  2. Step 2: Convert to fraction form
    57,835.32/79,780.86 = 39,939.72/x
  3. Step 3: Cross multiply
    57,835.32x = 79,780.86 × 39,939.72
  4. Step 4: Simplify right side
    57,835.32x = 3,186,425,209.76
  5. Step 5: Solve for x
    x = 3,186,425,209.76/57,835.32
  6. Step 6: Final answer
    x = 55,094.80

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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.