Home / 89,429.70-123,424.65-57,690.87

Finding the Fourth Proportional to 89,429.70, 123,424.65 and 57,690.87

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Solution

The fourth proportional to 89,429.70, 123,424.65 and 57,690.87 is: 79,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,429.70 : 123,424.65 = 57,690.87 : x
  2. Step 2: Convert to fraction form
    89,429.70/123,424.65 = 57,690.87/x
  3. Step 3: Cross multiply
    89,429.70x = 123,424.65 × 57,690.87
  4. Step 4: Simplify right side
    89,429.70x = 7,120,475,437.95
  5. Step 5: Solve for x
    x = 7,120,475,437.95/89,429.70
  6. Step 6: Final answer
    x = 79,620.93

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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.