Home / 87,018.96-130,500.88-53,689.12

Finding the Fourth Proportional to 87,018.96, 130,500.88 and 53,689.12

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Solution

The fourth proportional to 87,018.96, 130,500.88 and 53,689.12 is: 80,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,018.96 : 130,500.88 = 53,689.12 : x
  2. Step 2: Convert to fraction form
    87,018.96/130,500.88 = 53,689.12/x
  3. Step 3: Cross multiply
    87,018.96x = 130,500.88 × 53,689.12
  4. Step 4: Simplify right side
    87,018.96x = 7,006,477,406.43
  5. Step 5: Solve for x
    x = 7,006,477,406.43/87,018.96
  6. Step 6: Final answer
    x = 80,516.68

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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.