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Finding the Fourth Proportional to 103,492.50, 155,238.78 and 29,620.50

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Solution

The fourth proportional to 103,492.50, 155,238.78 and 29,620.50 is: 44,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,492.50 : 155,238.78 = 29,620.50 : x
  2. Step 2: Convert to fraction form
    103,492.50/155,238.78 = 29,620.50/x
  3. Step 3: Cross multiply
    103,492.50x = 155,238.78 × 29,620.50
  4. Step 4: Simplify right side
    103,492.50x = 4,598,250,282.99
  5. Step 5: Solve for x
    x = 4,598,250,282.99/103,492.50
  6. Step 6: Final answer
    x = 44,430.76

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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.