Home / 52,455.45-78,715.98-21,290.70

Finding the Fourth Proportional to 52,455.45, 78,715.98 and 21,290.70

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Solution

The fourth proportional to 52,455.45, 78,715.98 and 21,290.70 is: 31,949.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,455.45 : 78,715.98 = 21,290.70 : x
  2. Step 2: Convert to fraction form
    52,455.45/78,715.98 = 21,290.70/x
  3. Step 3: Cross multiply
    52,455.45x = 78,715.98 × 21,290.70
  4. Step 4: Simplify right side
    52,455.45x = 1,675,918,315.39
  5. Step 5: Solve for x
    x = 1,675,918,315.39/52,455.45
  6. Step 6: Final answer
    x = 31,949.36

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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.