Home / 67,070,356.02-100,605,408.54-21,015,750.78

Finding the Fourth Proportional to 67,070,356.02, 100,605,408.54 and 21,015,750.78

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Solution

The fourth proportional to 67,070,356.02, 100,605,408.54 and 21,015,750.78 is: 31,523,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,070,356.02 : 100,605,408.54 = 21,015,750.78 : x
  2. Step 2: Convert to fraction form
    67,070,356.02/100,605,408.54 = 21,015,750.78/x
  3. Step 3: Cross multiply
    67,070,356.02x = 100,605,408.54 × 21,015,750.78
  4. Step 4: Simplify right side
    67,070,356.02x = 2,114,298,192,996,724
  5. Step 5: Solve for x
    x = 2,114,298,192,996,724/67,070,356.02
  6. Step 6: Final answer
    x = 31,523,586.85

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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.