Home / 87,483.60-120,738-49,257.48

Finding the Fourth Proportional to 87,483.60, 120,738 and 49,257.48

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Solution

The fourth proportional to 87,483.60, 120,738 and 49,257.48 is: 67,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,483.60 : 120,738 = 49,257.48 : x
  2. Step 2: Convert to fraction form
    87,483.60/120,738 = 49,257.48/x
  3. Step 3: Cross multiply
    87,483.60x = 120,738 × 49,257.48
  4. Step 4: Simplify right side
    87,483.60x = 5,947,249,620.24
  5. Step 5: Solve for x
    x = 5,947,249,620.24/87,483.60
  6. Step 6: Final answer
    x = 67,981.31

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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.