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Finding the Fourth Proportional to 87,983, 131,996.51 and 25,653.50

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Solution

The fourth proportional to 87,983, 131,996.51 and 25,653.50 is: 38,486.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,983 : 131,996.51 = 25,653.50 : x
  2. Step 2: Convert to fraction form
    87,983/131,996.51 = 25,653.50/x
  3. Step 3: Cross multiply
    87,983x = 131,996.51 × 25,653.50
  4. Step 4: Simplify right side
    87,983x = 3,386,172,341.02
  5. Step 5: Solve for x
    x = 3,386,172,341.02/87,983
  6. Step 6: Final answer
    x = 38,486.67

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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.