Home / 87,280.46-130,920.79-28,124.94

Finding the Fourth Proportional to 87,280.46, 130,920.79 and 28,124.94

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Solution

The fourth proportional to 87,280.46, 130,920.79 and 28,124.94 is: 42,187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,280.46 : 130,920.79 = 28,124.94 : x
  2. Step 2: Convert to fraction form
    87,280.46/130,920.79 = 28,124.94/x
  3. Step 3: Cross multiply
    87,280.46x = 130,920.79 × 28,124.94
  4. Step 4: Simplify right side
    87,280.46x = 3,682,139,363.50
  5. Step 5: Solve for x
    x = 3,682,139,363.50/87,280.46
  6. Step 6: Final answer
    x = 42,187.44

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1.5x scale

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.