Home / 87,509.28-131,276.80-28,325.28

Finding the Fourth Proportional to 87,509.28, 131,276.80 and 28,325.28

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Solution

The fourth proportional to 87,509.28, 131,276.80 and 28,325.28 is: 42,492.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.28 : 131,276.80 = 28,325.28 : x
  2. Step 2: Convert to fraction form
    87,509.28/131,276.80 = 28,325.28/x
  3. Step 3: Cross multiply
    87,509.28x = 131,276.80 × 28,325.28
  4. Step 4: Simplify right side
    87,509.28x = 3,718,452,117.50
  5. Step 5: Solve for x
    x = 3,718,452,117.50/87,509.28
  6. Step 6: Final answer
    x = 42,492.09

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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.