Home / 66,096,420.80-99,144,631.20-20,658,142.40

Finding the Fourth Proportional to 66,096,420.80, 99,144,631.20 and 20,658,142.40

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Solution

The fourth proportional to 66,096,420.80, 99,144,631.20 and 20,658,142.40 is: 30,987,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,096,420.80 : 99,144,631.20 = 20,658,142.40 : x
  2. Step 2: Convert to fraction form
    66,096,420.80/99,144,631.20 = 20,658,142.40/x
  3. Step 3: Cross multiply
    66,096,420.80x = 99,144,631.20 × 20,658,142.40
  4. Step 4: Simplify right side
    66,096,420.80x = 2,048,143,909,525,082.75
  5. Step 5: Solve for x
    x = 2,048,143,909,525,082.75/66,096,420.80
  6. Step 6: Final answer
    x = 30,987,213.60

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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.