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Finding the Fourth Proportional to 86,307.44, 129,492.34 and 30,155.84

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Solution

The fourth proportional to 86,307.44, 129,492.34 and 30,155.84 is: 45,244.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,307.44 : 129,492.34 = 30,155.84 : x
  2. Step 2: Convert to fraction form
    86,307.44/129,492.34 = 30,155.84/x
  3. Step 3: Cross multiply
    86,307.44x = 129,492.34 × 30,155.84
  4. Step 4: Simplify right side
    86,307.44x = 3,904,950,286.27
  5. Step 5: Solve for x
    x = 3,904,950,286.27/86,307.44
  6. Step 6: Final answer
    x = 45,244.65

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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.