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Finding the Fourth Proportional to 71,780.50, 107,647.79 and 23,740.18

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Solution

The fourth proportional to 71,780.50, 107,647.79 and 23,740.18 is: 35,602.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,780.50 : 107,647.79 = 23,740.18 : x
  2. Step 2: Convert to fraction form
    71,780.50/107,647.79 = 23,740.18/x
  3. Step 3: Cross multiply
    71,780.50x = 107,647.79 × 23,740.18
  4. Step 4: Simplify right side
    71,780.50x = 2,555,577,523.38
  5. Step 5: Solve for x
    x = 2,555,577,523.38/71,780.50
  6. Step 6: Final answer
    x = 35,602.67

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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.