Home / 87,091.86-130,416.21-57,419.67

Finding the Fourth Proportional to 87,091.86, 130,416.21 and 57,419.67

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Solution

The fourth proportional to 87,091.86, 130,416.21 and 57,419.67 is: 85,983.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,091.86 : 130,416.21 = 57,419.67 : x
  2. Step 2: Convert to fraction form
    87,091.86/130,416.21 = 57,419.67/x
  3. Step 3: Cross multiply
    87,091.86x = 130,416.21 × 57,419.67
  4. Step 4: Simplify right side
    87,091.86x = 7,488,455,740.85
  5. Step 5: Solve for x
    x = 7,488,455,740.85/87,091.86
  6. Step 6: Final answer
    x = 85,983.42

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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.