Home / 52,078.74-78,117.99-12,635.82

Finding the Fourth Proportional to 52,078.74, 78,117.99 and 12,635.82

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Solution

The fourth proportional to 52,078.74, 78,117.99 and 12,635.82 is: 18,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,078.74 : 78,117.99 = 12,635.82 : x
  2. Step 2: Convert to fraction form
    52,078.74/78,117.99 = 12,635.82/x
  3. Step 3: Cross multiply
    52,078.74x = 78,117.99 × 12,635.82
  4. Step 4: Simplify right side
    52,078.74x = 987,084,860.40
  5. Step 5: Solve for x
    x = 987,084,860.40/52,078.74
  6. Step 6: Final answer
    x = 18,953.70

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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.