Home / 81,941,415.90-122,912,123.85-56,113,383.30

Finding the Fourth Proportional to 81,941,415.90, 122,912,123.85 and 56,113,383.30

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Solution

The fourth proportional to 81,941,415.90, 122,912,123.85 and 56,113,383.30 is: 84,170,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941,415.90 : 122,912,123.85 = 56,113,383.30 : x
  2. Step 2: Convert to fraction form
    81,941,415.90/122,912,123.85 = 56,113,383.30/x
  3. Step 3: Cross multiply
    81,941,415.90x = 122,912,123.85 × 56,113,383.30
  4. Step 4: Simplify right side
    81,941,415.90x = 6,897,015,117,812,121
  5. Step 5: Solve for x
    x = 6,897,015,117,812,121/81,941,415.90
  6. Step 6: Final answer
    x = 84,170,074.95

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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.