Home / 87,688.38-121,037.31-49,987.74

Finding the Fourth Proportional to 87,688.38, 121,037.31 and 49,987.74

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Solution

The fourth proportional to 87,688.38, 121,037.31 and 49,987.74 is: 68,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,688.38 : 121,037.31 = 49,987.74 : x
  2. Step 2: Convert to fraction form
    87,688.38/121,037.31 = 49,987.74/x
  3. Step 3: Cross multiply
    87,688.38x = 121,037.31 × 49,987.74
  4. Step 4: Simplify right side
    87,688.38x = 6,050,381,582.58
  5. Step 5: Solve for x
    x = 6,050,381,582.58/87,688.38
  6. Step 6: Final answer
    x = 68,998.67

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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.