Home / 77,679,776.46-107,197,563.39-42,872,465.88

Finding the Fourth Proportional to 77,679,776.46, 107,197,563.39 and 42,872,465.88

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Solution

The fourth proportional to 77,679,776.46, 107,197,563.39 and 42,872,465.88 is: 59,163,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,679,776.46 : 107,197,563.39 = 42,872,465.88 : x
  2. Step 2: Convert to fraction form
    77,679,776.46/107,197,563.39 = 42,872,465.88/x
  3. Step 3: Cross multiply
    77,679,776.46x = 107,197,563.39 × 42,872,465.88
  4. Step 4: Simplify right side
    77,679,776.46x = 4,595,823,878,856,912
  5. Step 5: Solve for x
    x = 4,595,823,878,856,912/77,679,776.46
  6. Step 6: Final answer
    x = 59,163,711.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.