Home / 77,128.38-106,437.98-45,297.80

Finding the Fourth Proportional to 77,128.38, 106,437.98 and 45,297.80

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Solution

The fourth proportional to 77,128.38, 106,437.98 and 45,297.80 is: 62,511.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.38 : 106,437.98 = 45,297.80 : x
  2. Step 2: Convert to fraction form
    77,128.38/106,437.98 = 45,297.80/x
  3. Step 3: Cross multiply
    77,128.38x = 106,437.98 × 45,297.80
  4. Step 4: Simplify right side
    77,128.38x = 4,821,406,330.44
  5. Step 5: Solve for x
    x = 4,821,406,330.44/77,128.38
  6. Step 6: Final answer
    x = 62,511.44

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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.