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Finding the Fourth Proportional to 87,673.64, 131,478.14 and 31,498.67

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Solution

The fourth proportional to 87,673.64, 131,478.14 and 31,498.67 is: 47,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,673.64 : 131,478.14 = 31,498.67 : x
  2. Step 2: Convert to fraction form
    87,673.64/131,478.14 = 31,498.67/x
  3. Step 3: Cross multiply
    87,673.64x = 131,478.14 × 31,498.67
  4. Step 4: Simplify right side
    87,673.64x = 4,141,386,774.34
  5. Step 5: Solve for x
    x = 4,141,386,774.34/87,673.64
  6. Step 6: Final answer
    x = 47,236.40

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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.