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Finding the Fourth Proportional to 46,379.98, 69,561.88 and 21,417.90

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Solution

The fourth proportional to 46,379.98, 69,561.88 and 21,417.90 is: 32,123.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,379.98 : 69,561.88 = 21,417.90 : x
  2. Step 2: Convert to fraction form
    46,379.98/69,561.88 = 21,417.90/x
  3. Step 3: Cross multiply
    46,379.98x = 69,561.88 × 21,417.90
  4. Step 4: Simplify right side
    46,379.98x = 1,489,869,389.65
  5. Step 5: Solve for x
    x = 1,489,869,389.65/46,379.98
  6. Step 6: Final answer
    x = 32,123.11

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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.