Home / 80,943.40-121,415.10-52,949.80

Finding the Fourth Proportional to 80,943.40, 121,415.10 and 52,949.80

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Solution

The fourth proportional to 80,943.40, 121,415.10 and 52,949.80 is: 79,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,943.40 : 121,415.10 = 52,949.80 : x
  2. Step 2: Convert to fraction form
    80,943.40/121,415.10 = 52,949.80/x
  3. Step 3: Cross multiply
    80,943.40x = 121,415.10 × 52,949.80
  4. Step 4: Simplify right side
    80,943.40x = 6,428,905,261.98
  5. Step 5: Solve for x
    x = 6,428,905,261.98/80,943.40
  6. Step 6: Final answer
    x = 79,424.70

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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.