Home / 56,758.86-85,109.14-30,485.70

Finding the Fourth Proportional to 56,758.86, 85,109.14 and 30,485.70

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Solution

The fourth proportional to 56,758.86, 85,109.14 and 30,485.70 is: 45,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,758.86 : 85,109.14 = 30,485.70 : x
  2. Step 2: Convert to fraction form
    56,758.86/85,109.14 = 30,485.70/x
  3. Step 3: Cross multiply
    56,758.86x = 85,109.14 × 30,485.70
  4. Step 4: Simplify right side
    56,758.86x = 2,594,611,709.30
  5. Step 5: Solve for x
    x = 2,594,611,709.30/56,758.86
  6. Step 6: Final answer
    x = 45,712.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.