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Finding the Fourth Proportional to 85,492.80, 128,265.05 and 25,523.24

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Solution

The fourth proportional to 85,492.80, 128,265.05 and 25,523.24 is: 38,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,492.80 : 128,265.05 = 25,523.24 : x
  2. Step 2: Convert to fraction form
    85,492.80/128,265.05 = 25,523.24/x
  3. Step 3: Cross multiply
    85,492.80x = 128,265.05 × 25,523.24
  4. Step 4: Simplify right side
    85,492.80x = 3,273,739,077.24
  5. Step 5: Solve for x
    x = 3,273,739,077.24/85,492.80
  6. Step 6: Final answer
    x = 38,292.57

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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.