Home / 72,754,401.40-109,131,602.10-43,985,728.60

Finding the Fourth Proportional to 72,754,401.40, 109,131,602.10 and 43,985,728.60

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Solution

The fourth proportional to 72,754,401.40, 109,131,602.10 and 43,985,728.60 is: 65,978,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754,401.40 : 109,131,602.10 = 43,985,728.60 : x
  2. Step 2: Convert to fraction form
    72,754,401.40/109,131,602.10 = 43,985,728.60/x
  3. Step 3: Cross multiply
    72,754,401.40x = 109,131,602.10 × 43,985,728.60
  4. Step 4: Simplify right side
    72,754,401.40x = 4,800,233,031,653,790
  5. Step 5: Solve for x
    x = 4,800,233,031,653,790/72,754,401.40
  6. Step 6: Final answer
    x = 65,978,592.90

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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.