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Finding the Fourth Proportional to 66,302.60, 99,453.90 and 53,180.60

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Solution

The fourth proportional to 66,302.60, 99,453.90 and 53,180.60 is: 79,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,302.60 : 99,453.90 = 53,180.60 : x
  2. Step 2: Convert to fraction form
    66,302.60/99,453.90 = 53,180.60/x
  3. Step 3: Cross multiply
    66,302.60x = 99,453.90 × 53,180.60
  4. Step 4: Simplify right side
    66,302.60x = 5,289,018,074.34
  5. Step 5: Solve for x
    x = 5,289,018,074.34/66,302.60
  6. Step 6: Final answer
    x = 79,770.90

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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.