Home / 66,448.20-99,622.70-40,147.40

Finding the Fourth Proportional to 66,448.20, 99,622.70 and 40,147.40

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Solution

The fourth proportional to 66,448.20, 99,622.70 and 40,147.40 is: 60,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,448.20 : 99,622.70 = 40,147.40 : x
  2. Step 2: Convert to fraction form
    66,448.20/99,622.70 = 40,147.40/x
  3. Step 3: Cross multiply
    66,448.20x = 99,622.70 × 40,147.40
  4. Step 4: Simplify right side
    66,448.20x = 3,999,592,385.98
  5. Step 5: Solve for x
    x = 3,999,592,385.98/66,448.20
  6. Step 6: Final answer
    x = 60,191.13

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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.